Tag Archives: astronomy

The Unistellar eVscope

(February 2020)

I recently received my eVscope from Unistellar and after just a few sessions with it, I thought I would share my thoughts and experiences with it so far – particularly since there wasn’t a lot of info available when I ordered it in back in July of 2019.

Overview

The Unistellar eVscope is quite different from a traditional optical telescope.  It’s a highly integrated and automated digital imaging telescope that enables you to easily find and view deep sky objects in color and detail that would not normally be perceptible to your eye looking through a normal optical telescope.  In addition, the eVscope is designed to let you easily participate in and contribute data to crowd-sourced “citizen science” projects.

The eVscope is a 4.5-inch Newtonian reflector that captures light on a highly sensitive, low noise Sony IMX224 color sensor while using a motorized alt-az tracking mount and autonomous field detection to automatically identify, align and continually track its view of the sky.  Integrated image-processing software takes and combines an on-going series of short exposures to generate an image in almost real time that brings out much of the very low light, color and detail that’s not visible to the human eye even when looking through a normal telescope. This view accumulates over just seconds and minutes and is displayed both in the telescope’s eyepiece (on an OLED display) as well as on a WiFi-connected smartphone.  The whole thing is self-powered via an integrated 9-10 hour rechargeable battery, fits into a large backpack and weighs just under 20 lbs. including the provided tripod.

In other words, it’s quite an impressive level of integration!

While you can of course outfit a normal telescope and tracking mount of your choosing with the necessary cameras, computer, tracking and image stacking software, WiFi connectivity, battery power, etc., you then also have to develop the expertise to use and troubleshoot this software – and it’s not trivial. To be clear, the eVscope is not really designed to be a sophisticated imaging tool or to compete with the results you can eventually get with lots of practice and expertise and many hours of capturing and processing images.  Instead, the eVscope is intended to let you easily see and enjoy much more detail than you can with a normal, unaided telescope and it provides quick setup, ease of control from your smartphone, and a fun, real time viewing experience all wrapped up in a lovely, convenient little package.

It is however not cheap to integrate all these components into such a convenient package.  As such, I wouldn’t recommend it for someone wanting to dip their toe into astronomy on a small budget.  It’s pretty clear though that this makes for a wonderful tool for astronomy outreach programs anywhere and I’m really looking forward to sharing the experience with friends and their families.

Citizen Science

As I mentioned above, the eVscope is also designed to participate in crowd-sourced “citizen science”, in partnership with the SETI Institute.  As per their web site, the eVscope “allows users around the world to participate in observing campaigns to image and collect data on objects of special interest to researchers.  In Campaign Mode, image data is automatically sent to a data repository at the SETI Institute’s headquarters in Silicon Valley. The international scientific community can then access unprecedented volumes of image data for specific objects, from thousands of telescopes around the world, at different dates and times. This in turn, can enable new discoveries and enhance our understanding of the universe around us.”

Just in the past week, I had the opportunity to participate in one of these observing sessions.  I received an email providing instructions for a particular target and observing time to collect data on an exo-planet transit of “WASP-43b”.  The procedure involved setting up beforehand, selecting and confirming the target and then starting the Enhanced Vision capture process and letting it run autonomously for several hours as it tracked the target.  Afterwards there was the capturing of 30 seconds of “dark frames” and then initiating the download of data from the telescope followed by the upload to their servers.  While I encountered a few issues along the way (included in my bug list below), it was fun to get to participate in a data gathering session like this.

Setup and Use

I recorded a video to demonstrate the ease of setting up and using the eVscope:

I forgot to record using the focus ring on the base of the scope, so perhaps I’ll add that later, but Unistellar provides a nice page detailing how to use it with the provided Bahtinov mask: How to use the Bahtinov mask?  (It’s great how the mask is integrated into the cap!)

With the earlier version of software (version 0.9), I did encounter a lot of bugs but most of these have already been addressed in version 1.0 (April 2020).  They’ve also already made improvements and added functionality that makes the eVscope an even more fun and amazing experience to share with people.

The ease of setup and the speed with which you can get to viewing objects is great.  I really like the convenient size of the thing, including the integrated power supply and the optional padded backpack to carry and protect it.  The initial star alignment process is super fast (around 30 seconds) and it’s autonomous field detection system seems to do a great job of tracking the sky and dealing with field rotation over several hours.  I did find the views appear slightly soft (presumably from the effort to track, align and integrate frames over many minutes) but still quite enjoyable, and perhaps this will improve with future updates.  You can see some sample images below.  I should note that I haven’t tried collimating the scope yet, so I’ll update here when I get the chance.  Update (April 2020): I finally had both time and a bit of clear weather to collimate the telescope and it turns out it was off a little but now well aligned.  Over time I’ll try to replace all the images in the gallery with new ones post-collimation.  So far it’s just the last few in the gallery that were taken after collimation. (Whirlpool Galaxy, Ring Nebula, Eagle Nebula)

Another aspect of the very quick and easy setup is that it takes less than a minute to pull out the scope on a whim, stand it up on the open patio outside my bedroom, remove the cap, turn it on and dash back inside out of the cold winter night, and settle in with my phone or iPad and mess around exploring the sky, in warmth and comfort.  I definitely cannot set up and align my 8” SCT and german equatorial mount so quickly and easily even with the auto-align accessory, plus there’s setting up cameras, laptop, myriad power and USB cables, etc.  Not to forget to mention the disassembly and take down time afterwards again!

That said, I don’t think you should think of the eVscope as astrophotography gear. Everything is integrated to make it easy to observe deep sky objects with color and detail you can’t see without the aid of sensors, but it does not provide the means to capture frames and do your own stacking or more sophisticated and detailed imaging with a non-color sensor and color filters, etc. I would not expect this telescope to compete with custom gear where you have control over everything (and of course have to learn how to do everything). That is not the purpose of its design. Similarly, the cost reflects the benefits of integrating all these pieces (sensor, tracking software, stacking/imaging software, display, power supply, etc) into a small and elegant package without any cables or separate components to manage while also making it dead simple to use. That’s what you’re paying for and that’s the trade-off.

The provided documentation is pretty good in some areas but a little weak in others. (As of February 2020.) For example, I was surprised how long it took me to find a little blurb buried in a list at the back of the printed guide that explained how to tell if the battery was fully charged.  And really, the charge state should also be displayed in some form in the app!  As of 0.9.3, there is now a rough charge state shown in the app in the form of a battery icon (no percentage estimate though).

Also, what’s going on with the gain/exposure controls only usable in live view and the contrast/brightness controls only usable in enhanced vision mode?  Does changing the gain/exposure before starting enhanced vision affect the results?  There’s very little information on how best to make use of these controls or how the automatic settings work – in auto mode with enhanced vision, it seems to randomly try different contrast/brightness settings over many minutes.  It seems to go back and forth – it doesn’t seem to be working in a particular direction.

Another example is that there was no explanation (or instructions for use) of the “download data” and “upload data” buttons.  I only learned how to use them after getting the email for the “citizen science” observation that included instructions to use those buttons.  Still leaves me wondering though as to what that data consists of and whether or not we should be regularly downloading/uploading this data.

However, it does look like Unistellar has been actively adding explanatory content to their online knowledge base over the past couple of months, so more and more questions are getting answered.

Sample Views

Here’s a couple of real time recordings of the Unistellar app showing the live view from the eVscope of the Orion Nebula (over 3.5 minutes) and Bode’s Galaxy (over 6 minutes):

       

Here are some images illustrating the views you can generate and enjoy in just minutes with the eVscope.  I’ve included both screenshots of the full image displayed on my phone as well as the circular cropped image that it produces for display in the eyepiece and that it allows you to save from your phone.  (The eyepiece shows only the circular cropped image and it does not display the descriptive text or circular outline.) I have not done any further processing on these images – these are just as they were originally generated by the eVscope app or screenshot-captured off my phone. (Originally, the eVscope app would only save the circular cropped version, but now the app will let you save the full uncropped version.)

The Sony IMX224 Exmor CMOS color sensor used in the eVscope has a resolution of 1305 x 977.  The images saved from the eVscope app are 1280 x 960 and the circular cropped images are 1080 x 1080.

Click on any image below to see the full size version and to browse the gallery:

Flame Nebula NGC 2024

Running Man Nebula NGC 1977

Bode’s Galaxy M81

Orion Nebula M42

Eagle Nebula M16

Andromeda Galaxy M31

Whirlpool Galaxy M51

Lagoon Nebula M8

Feature Requests

As of April 2020, version 1.0 of the Unistellar app, running on iOS 13:

  • Finer positioning control: Currently, the smallest possible position adjustment is with a single quick tap on the directional arrows around the joystick control but this still moves objects in the display about 1/6 or so across the field of view.  In other words, it’s not possible to move the scope by a smaller amount.
  • Display useful status/info: Please provide current status info in the app like Enhanced Vision mode’s elapsed exposure time and/or stacked image count, current sky coordinates and battery charge state estimate.  (The elapsed exposure time and coordinates are only currently available after the fact in the saved images.)  Update: As of 0.9.3, there’s now a battery charge state icon.  No percentage estimate, but still useful.
  • Allow information overlay on saved images separate from cropping option: As of version 1.0, you can now choose to save the full, uncropped, undistorted image by choosing to not apply the “image overlay” option under General options.  However, this also removes the useful information text like the object name, exposure time, location and date which would often still be nice to have appended along the bottom of the image.  I suggest that the cropping option and the information overlay option be separate options.
  • Allow image save during live sky view: The option to save an image is only enabled during the Enhanced Vision mode, not during live sky view.  This would be useful for very bright objects (like the moon and planets) when Enhanced Vision mode doesn’t produce useful results.
  • Allow interaction with other controls when picture adjustment controls are present: Showing the picture adjustment controls (gain, exposure, contrast, brightness) blocks the ability to zoom the image or save it.  I find this inconvenient since I’m always making little tweaks to these controls and want to zoom in or out and save the image in between the adjustments.
  • “Picture was saved” notification interferes with usage of the app:  After saving an image, a little notification appears at the bottom across the modal tab buttons for a couple of seconds, forcing you to wait until it disappears.  Please move this message elsewhere where it doesn’t get in the way and/or reduce how long it’s displayed.
  • Goto support via SkySafari: Would be wonderful to be able to use SkySafari to browse, select and go to targets with the eVscope (as you can with many other telescopes/mounts), as well as to be able to easily see and explore where the scope is currently pointing.
  • Dedicated iPad version of app: The current iOS app is just scaled up from the phone version on the iPad and does not take advantage of all the additional screen real estate.  The iPad would be an even better platform for viewing/controlling the eVscope if the available space were well utilized.
  • Allow panning of zoomed view in the app: The app display’s zoom feature currently only zooms into the center of the image.  You can’t zoom in anywhere else in the image.
  • Improve catalog display: The current style of displaying catalog items as a grid of large icons requires that the object names often be truncated.  Also, the large generic icons to indicate the type of object aren’t a great use of the available space.  How about a list-oriented view (and a smaller icon) to make better use of the screen real estate?
  • Shared WiFi connectivity: Would be nice to be able to optionally configure the eVscope to use an available WiFi network instead of its own WiFi at times so as to 1) support extended WiFi reach, 2) allow devices to access both the internet and the telescope simultaneously, 3) to avoid the need to always switch to the telescope’s WiFi, and 4) to perhaps help avoid the occasional disconnects that happen now.
  • More expansive view through the eyepiece: I can see that the design of the eVscope was to very much provide an optical, telescope-like viewing experience – which is of course why there is an eyepiece on the scope at all.  However, I think it is a mistake to not maximize the apparent field of view in the eyepiece to provide more of a grand and wondrous view.  To that end, I wonder if you could use a different lens with the eyepiece to really open up the apparent magnification and field of view of the image you’re able to generate.

Currently you see a small constrained view far down the end of a tube.  You should really try to shoot for a big gorgeous panoramic view, a “spacewalk vista”, like what you get with TeleVue’s fantastic, wide apparent field eyepieces.  Could you simply make use of the same kind of optics and/or display technology inside the electronic viewfinders that Sony and other camera manufacturers use in their digital SLR cameras?  These digital display viewfinders do a fantastic job of enlarging the apparent view on these tiny little displays.  They’re a joy to use and provide a much larger, clearer, detailed view than you get from the displays mounted on the backs of these same cameras.  I realize this would require a hardware change but oh, what a view that would be!

Along these same lines, could there be a way to make use of the full uncropped image in the eyepiece?  With relatively large targets, the uncropped view on the phone’s display is much more expansive and enjoyable than the much constrained circular cropped view.  Could there be a way to present the full uncropped rectangular view and allow it to be rotated in the eyepiece to deal with changes in the telescope’s orientation?

  • Send Observation Parameters: Given the eVscope’s ability to participate in “citizen science” observations and data collections, it seems like there should be a more direct way to send observation parameters (like RA/Dec coordinates and exposure/gain settings) to the scope from an emailed observation request.  Perhaps encoded in a URL that’s interpreted by the Unistellar app?  It’s kinda silly that you have to transcribe lengthy coordinates from an email on the phone to the Unistellar app on the phone.  You can’t even copy/paste right now!

These options or features are now available:

  • Option to save full, uncropped image: IMPLEMENTED As of version 1.0, there is now an option to choose between saving the full frame image or the circular cropped version with the info.  Yay!!  However, it would be nice to get the textual info with the full uncropped version too.  Currently there is only an option to save or share the circular cropped image.  It’s both heavily cropped and mildly distorted around the edges to give it a sort of eyepiece lens effect.  Please provide a built-in option in the app to save the full uncropped, undistorted image!  I should not have to go to the trouble to capture a screenshot of my phone and manually crop it to get the full image.

Issues / Bugs

As of April 2020, these are the issues I’ve been seeing with my current version of the Unistellar app (version 1.0) for iOS 13 (iPhone XS, iPad Pro).

  • Why are the download/upload functions so incredibly slow??  Even over local WiFi from the telescope to the phone?  How many gigabytes could that possibly be? I don’t have enough storage on my phone for it to take that long. Is there a bug here?
  • Sometimes lots of large random distortions and smears of light and color appear in the display. (I’m not talking about while slewing which would be expected.)

As of version 1.0, the following issues all seem to be addressed – or at least haven’t happened again yet:

  • The gesture to pinch zoom is buggy and at times it jumps around or refuses to stick.  Strangely, at other times, it works just fine.  I haven’t picked up on a pattern as to when it doesn’t work.  As of version 1.0, this is working much better.  It can still act a little wonky at times but it’s much better.
  • The app will immediately crash/exit when you return to the app after being disconnected from the scope or wifi or after having to leave the app for some reason and come back.  The app will also occasionally crash/exit for other unknown reasons in the midst of using it, but I haven’t tried to maintain a list of each circumstance.  Hopefully you’re receiving the iOS crash reports from Apple.
  • I’m seeing a patch or trail of green pixels on most images in the same place.  I’m guessing I’ve got a hot/stuck pixel on my image sensor and the random walk pattern of the pixel is just the effect of combining many images as the field shifts and rotates while tracking the target.  Is there support for subtracting out hot/stuck pixels?  As of version 1.0, the “Take Dark Frame” action also results in removing any stuck pixels from the eVscope’s imaging.
  • Adjusting the contrast/brightness controls while enhanced vision running usually results in the slide control jumping back to its previous position while it completes current frame, and only then it jumps to where you set it.  If you don’t realize it’s going to do this, you’ll try to move it again and again and only get even more confused as to why it keeps jumping around.  It needs to at least stick in the new position even though the next frame is still being generated.
  • On one occasion, the joystick/slew buttons seemed to stop working but after quitting and relaunching the app I found that it had actually slewed but had apparently stopped updating the displayed view.
  • On another occasion, the joystick slew buttons stopped working and the scope view began shifting randomly.  Had to quit/relaunch the app to fix it.
  • Another time the app got stuck in a goto/skewing operation and none of the buttons worked any more and I couldn’t select another target.  The telescope seemed to be no longer tracking the sky, the star field just drifted in the display.  Force-quitting the app didn’t help.  I had to power down the telescope and restart it.
  • Seems like the app or the telescope gets confused if you exit the app while enhanced vision mode is engaged.  Are you supposed to be able to exit and come back while enhanced vision is in progress?
  • Often the app will forcefully halt the enhanced vision mode without warning and without a chance to save what you have so far – it just returns to the live view.  Sometimes there is no message at all and other times there will be an error message like “too bright” even when it appears there is still much more light that could be captured over most of the frame: only a couple of bright stars in a large field of dim nebula, before the nebula has even really become visible.  Please don’t forcefully stop!  (Also, how is it that we were instructed to leave enhanced vision mode running for hours during the recent exo-planet transit when I have had it quit after just 10 minutes or so on a nebula??)
  • I found that both the download and upload sequences would sometimes stop processing after many minutes and I would have to quit and restart them.  This happened several times (4-5 maybe?).
  • On a couple of occasions, the “goto” catalog list would jump or reset its scroll position while trying to scroll through it making it difficult to select the desired item.  Usually it’s fine – I haven’t figured out when this happens yet.
  • Please rework how those three sequential messages work asking whether to automatically save the image after running enhanced vision.  It was frustrating trying to get it to just prompt me to save the image without also asking me two follow-up questions every time.
Share
Also tagged , , | 2 Comments

Unistellar eVscope

I recently received my eVscope from Unistellar and after just a few sessions with it, I thought I would share my thoughts and experiences with it so far – particularly since there wasn’t a lot of info available when I ordered it in back in July of 2019.

Overview

The Unistellar eVscope is quite different from a traditional optical telescope.  It’s a highly integrated and automated digital imaging telescope that enables you to easily find and view deep sky objects in color and detail that would not normally be perceptible to your eye looking through a normal optical telescope.  In addition, the eVscope is designed to let you easily participate in and contribute data to crowd-sourced “citizen science” projects.

The eVscope is a 4.5-inch Newtonian reflector that captures light on a highly sensitive, low noise Sony IMX224 color sensor while using a motorized alt-az tracking mount and autonomous field detection to automatically identify, align and continually track its view of the sky.  Integrated image-processing software takes and combines an on-going series of short exposures to generate an image in almost real time that brings out much of the very low light, color and detail that’s not visible to the human eye even when looking through a normal telescope. This view accumulates over just seconds and minutes and is displayed both in the telescope’s eyepiece (on an OLED display) as well as on a WiFi-connected smartphone.  The whole thing is self-powered via an integrated 9-10 hour rechargeable battery, fits into a large backpack and weighs just under 20 lbs. including the provided tripod.

In other words, it’s quite an impressive level of integration!

Continue reading »

Share
Also tagged , | Leave a comment

Sunshine and Hail in Desolation Wilderness

Darlene and I headed into Desolation Wilderness from the Meeks Bay trailhead on Lake Tahoe this Monday for three days, two nights of backpacking.  This turned out to be a pretty easy going climb and less than five miles to the first lake (Genevieve) and a few more miles to where we camped at Stony Ridge Lake for both nights.

On our layover day, we continued on up to Rubicon Lake and then set off cross-country to reach the saddle to the southeast in hopes of a nice view overlooking Emerald Bay.  Unfortunately, thunderclouds started coming in and we had to bail out before we could get to the overlook.  On our way back down, we were caught in a surprisingly heavy hail storm and then had to dash down off the heights in the rain as the thunder and lightning approached.  We returned to camp pretty soaked and moved everything a few hundred feet to a better location to wait out the storm.  Happily the rain let up before the sun set for the day.

Fantastic night skies too, with no moon!

Click through for the full gallery:

     

Share
Also tagged , , , | Leave a comment

Geminids over Pinnacles

Darlene and I went down to Pinnacles National Park for dark skies to watch the Geminids meteor shower Wednesday night:

Time-lapse of Geminids meteor shower

That’s a 20-second time-lapse I made looking south towards Orion about midnight, covering about 90 minutes that didn’t include any light trails from passing airplanes.  And here’s a still shot.

Share
Also tagged , , , | Leave a comment

A Total Eclipse of the Sun

Darlene and I managed to meet up with Glenn, Michele and Seaerra in Eastern Oregon this past week to experience the total solar eclipse together.  We snagged a nice dispersed camping spot in the Malheur National Forest in an area I had scouted out back in June and we arrived four days early to get ahead of any potential crowds.  As it turns out, we were in a remote enough area to only see a scattering of other campers.

We were also very lucky with the weather as there were a number of distant wildfires filling the skies with smoke days before and then it turned cloudy Sunday afternoon.  But on Monday, the day of the eclipse, we had clear blue skies!  (And smoke-filled skies the very next morning.)

A short video montage of the eclipse viewing experience (2.5 minutes)

And yes, seeing a total solar eclipse is truly an amazing experience.  There’s the hour or so of build up beforehand as the light turns queer and dim and the heat of the sun fades away but then, as the last thin crescent splinter of sunlight disappears, you pull off your eye protection and… boom!  The sun’s gorgeous corona suddenly appears streaming all around the pure black disc of the moon.  It’s an incredible sight to behold.  The sky was dark enough to reveal a couple of planets and a few brighter stars.  The sky doesn’t go completely dark because of both the sun’s wispy corona and scattered sunlight from 35 miles away or less in every direction, outside the shadow of the moon.

The view was entirely captivating but, before we knew it, our two minutes of totality was already ending: a small bright bead of light starts to form which quickly brightens to create the stunning “diamond ring” effect.  And then back on with the solar filters and glasses.

I had several cameras set up and recording different perspectives: one with a telephoto lens, one on a drone hovering out-of-earshot, one focused on the scene of us and one on my telescope to capture a much closer view (an 8-inch Schmidt-Cassegrain with a focal reducer to widen the view) and I’m so glad I did as we were able to see several solar eruptions in progress around the edge.  Gorgeous!

Darlene and Michele also took some nice pics and video with handheld cameras.  Click through for the full gallery of pictures and videos:

     

Here’s Michele (my sister-in-law)’s take on the experience: Midnight Sun


Update:  Somebody asked me about our white sheet spread out on the ground and whether we had managed to see the elusive “shadow bands”.  The answer is no, but this question prompted me to go back to the video that was rolling the whole time to see if I could find them.

They’re supposed to be very faint, thin, moving shadows (aka, “shadow snakes”) that are difficult to see and more difficult to record.  We had looked specifically for them on the sheet about a minute before totality and then of course we were completely distracted by the amazing show in the sky afterward.

However, examining the video recording more closely and turning up the contrast, I think I may have found them:

Shadow bands?

 

Share
Also tagged , , , , | Leave a comment

Perseids at the Pinnacles

Darlene and I made an overnight visit to Pinnacles National Monument last Thursday to catch the Perseids in a clear dark sky again.  While enjoying the show, I took a few long exposures and caught a couple of meteors:

DSC00297 DSC00308 DSC00315

Share
Also tagged , | Leave a comment

Burning New Moon

Caught a super thin crescent of a new moon chasing the sunset a couple of days ago:

DSC01891

Looked like it was on fire as it set behind the ridge – here’s some video through my telescope
(at 4x normal speed):


DSC01894 DSC01898

Share
Leave a comment

“Oh my god, it’s full of stars!”

I’ve looked into telescopes a bit now and again, spurred by some new cool astronomical event but never actually took the plunge until just recently, near the end of 2013, with the approach and subsequent demise of comet ISON.  This time I was committed to doing the research and actually ordering some gear… and, given my love of photography, astrophotographic gear too!  Oh my, what a deep hole I’ve found here… what have I got myself into?!?

Things started out a little rough as my mount arrived in November with a manufacturing defect that I didn’t know enough to figure out immediately and required some back and forth with Celestron’s tech support to narrow down.  Then I had to package it all back up and send it back and wait for a replacement.

But here it is, it’s an 8″ Celestron EdgeHD 800 on an Advanced VX mount – lovely!  (It’s a Schimdt-Cassegrain on a German equatorial mount.)

My Celestron EdgeHD 800 telescope set up on my upstairs deck

I’ve long wanted to get a telescope, as in a real telescope, not that silly cheap thing I got as a kid in the 70’s.  I’ve tinkered on and off with desktop and mobile apps for exploring the night sky, explored a bit with a nice pair of image-stabilized binoculars and attended the occasional star party here and there.  (The one held on the slopes of Mauna Kea was pretty cool!)

And I wanted to take advantage of the somewhat darker skies I now have here in the hills above Santa Cruz – at least darker compared to my old condo in San Jose – that swath of light from Silicon Valley and the Bay Area is at least somewhat shielded by the coastal mountains here.  I’ve got a nice, super-convenient, south-facing deck off of my upstairs master bedroom with an open view of most of the sky (except to the north, beneath the celestial pole).  And once I get a little more experienced, it’ll be fun to pack up the gear and take it to some remote dark locations.

DSC01262-v3 DSC01298

It’s pretty overwhelming how much there is to learn, particularly when you get into astronomical imaging, but I am certainly enjoying the endeavor.  As such, I’ve decided to put together a little newbie’s guide to backyard astronomy to summarize all the information I’ve been gathering and the choices I’ve been making as to gear and setup:  A Newbie’s Guide to Telescopic Adventures

So here’s a bit of first light through it – imaging a portion of the Orion nebula.  Mind you, I’m just starting to get into this and this is just a newbie’s single, 16-second exposure to catch a bit of color:

Orion Nebula (M42), Nikon D7000, 16 seconds @ ISO 6400, 8″ EdgeHD, .7x reducer lens

Share
Also tagged , | Leave a comment

A Newbie’s Guide to Telescopic Adventures

(First published January 2014)  

Thank goodness for the wealth of easy information sharing on the web.  Would’ve been quite different diving in back in the early 90’s.  Of course the gear has advanced a lot too.  So here I am sharing the experience of jumping in relatively new.  And how foolish for a newbie to write a guide for other newbies?  Well, you’ve been warned – though I’ve long had an interest in astronomy, I’m really only just now getting into this very deep!

Continue reading »

Share
Also tagged | 14 Comments

Perseids at the Pinnacles

Darlene and I camped out on the east side of Pinnacles National Park this past Sunday to watch the Perseids meteor shower. We had some fairly dark skies as Pinnacles is in a somewhat remote location. The glow of lights from Hollister and Salinas (about 25-ish miles away) were apparent to the north but the Milky Way was still quite visible. And the crescent moon set nice and early. We spotted probably several meteors per minute.  There were a few clusters of four or five.

I made a little video of some time lapse images I captured during the night:

As it was a Sunday night, getting a campsite was easy – most of the sites were vacant — not so on a Friday or Saturday night!  There was lots of wildlife though… of the more natural variety.  We had multiple visits from human-habituated deer, rabbits and a coyote in our campsite.  (I don’t count the yellow jackets!)  We went for a hike to see the nearby talus caves and saw a couple of bats but part of the caves were still closed to protect the bat colony.  (Talus caves are formed by rocks and boulders falling into a narrow area to form a ceiling and block out the sky.)  On Monday, we hiked the High Peaks loop and happened to run into an old coworker from FileMaker.  We also saw some turkey vultures and possibly some California condors.

 

Share
Also tagged , , , , , | Leave a comment

Moon-Jupiter Conjunction

A nice conjunction of the Moon and Jupiter tonight — meaning that they appear very close together in the sky.  With binoculars, you can see our moon, Jupiter nearby (appearing as a small disc) and several of Jupiter’s moons (several points of light around Jupiter) all at once.  Pretty cool.

I tried to capture what I could see through my binoculars using my 400mm lens plus a 2x teleconverter on my DSLR but I wasn’t able to get a sharp image with my lightweight tripod, even with a delayed shutter release.  (I have been meaning to get a heavy tripod for this sort of thing.)  So this was the best I could do before the sky started to get a little cloudy with moisture — and I never got so far as finding an exposure to catch Jupiter’s moons as well:

Share
Also tagged | Leave a comment

Aliens!! Hiding in the Sun!

I found the alien spacecraft hiding in front of the sun today!!  It’s still there now as of 5 pm June 5th, slowly moving across the face.  Alert the media!

Strangely, neither Pan or Hera seemed particularly concerned about this news, but at least Hera seemed to be paying attention.

 

(Okay, yes, for the benefit of finding this later, it’s a transit of Venus.)

Share
Also tagged , | Leave a comment

Eclipse Watch

I drove up to a spot near Lake Tahoe for the annular eclipse on the evening of May 20th, 2012.  Unfortunately, I didn’t plan ahead and get the necessary solar filters to do any photography work — and checking around the couple of days before the event proved fruitless.  But at least I had binoculars so I could set up a projection to watch it.

My little arrangement makes me think of the robot from the movie Short Circuit.  Hmm, I suppose Wall-E too.

Share
Also tagged | Leave a comment

Lunar Eclipse

This morning’s lunar eclipse…

DSC_1797

I liked how I could just step out on the balcony to see it too.

Share
Also tagged | Leave a comment