Monday, August 10, 2020

processed NGC 891

Processed NGC 891 in colour with Photoshop. It is one of the RASC Finest I shot back in Sep 2016. A lovely edge-on spiral galaxy.

galaxy NGC 891 in colour

LRGB data from BGO. Pre-processed in FITS Liberator. Post: layer colourisation, luminance layer, each layer levelled and curved, cropped, with a top-level curve.

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A few more edits...

stars reduced, saturation increased

Applied a Minimise filter on the star mask. Much better. Boosted the saturation a bit.

measure your sky

A Globe At Night campaign begins tonight. Gauge light pollution from your home location and submit the results via the web site. Or use your SQM meter if you have one. Or use Dark Sky Meter on iOS. I'm going to use the Loss of the Night app for Android...

Sunday, August 09, 2020

blogger changes

Ho ho! A positive change in the new blogger editor environment. Now I can see all (or many) of the tags-labels in the list screen. Thank you!

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Thumb's down on the HTML coding change. Now paragraph tags are used and it's changing the spacing or layout a little bit in the posts. That's kind of a big deal.

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Definitely a moving carpet...

stuck here

I'm re-reading my Calvin and Hobbes books. Need some joy in my life right now. 

From the Days Are Just Packed collection, a couple of pages in, I found a funny bit, in one of the "intro" panels, the quick joke in the second box. It starts with Calvin and his trusty friend and tiger extraordinaire standing outside and looking up at the night sky. Calvin, pointing, says, "There's Venus. There's Mars. And there's Jupiter." Then Calvin looks down, with a scowl. He says, "And I'm stuck here." Watterson's emphasis.

If I could, I would.

Saturday, August 08, 2020

helped with online event

Helped at the online DDO speaker night. Dr Brar talked about Einstein predicted gravitational waves 100 years ago. It was Andrew's first live production using OBS Ninja. He asked me to monitor the YouTube Chat.

Monday, August 03, 2020

found new version of MCU

After a bit of digging, I found a new version of the MallinCam Universe software, version 5.0. Need to be on groups.io to get it... Weird. Happily, the app now writes out an AVI file correctly, proper playback in MS Films & TV and VideoLAN VLC. But the crop feature is not used, still, during recording.

Sunday, August 02, 2020

watched the splashdown

Watched NASA astronauts return to Earth in the SpaceX dragon. Wow. I hadn't thought about it... 45 years since a splashdown for the United States space agency. A pretty impressive mission overall.

Saturday, August 01, 2020

posted August 2020 doubles

Sent out my double star "bulletin" for August 2020. It is a short list of suggested targets. I shared this on the RASC Toronto Centre forums. And I post here for everyone.

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The Moon’s bright again. Don’t despair; do doubles.

Here’s a short selection of double and multi-star systems from my life list for your observing campaign. I found them interesting.

staralso known asalternate catalogue(s)
HD 164536 SgrARG 31SAO 186152, PPM 267729
HR 6162 HerΣ2063 (Struve)SAO 46147, HIP 80953
HD 119702 UMiHJ 2682SAO 7867, HIP 66728
ζ LyrSTF A 38 (Struve), BU 968SAO 67321, HIP 91971
HD 144564 SerΣ2007SAO 101922, HIP 78875

An interesting quality of double stars is their resistance to creeping light pollution. So, have a go. See if you can split them and detect colour. How different are they in brightness? And share your discoveries.

Blake Nancarrow
astronomy at computer-ease dot com

Friday, July 31, 2020

sent article

After reviewing Rhonda's edits and verifying something subtle I had missed, submitted my latest column piece for the RASC Journal.

Thursday, July 30, 2020

watched for signal

I fired up the Deep Space Network live feed web page and waited... Watched for it at the Canberra station in Australia. 

signal from NASA spacecraft coming in

Ah ha! Incoming signal from the NASA Mars spacecraft, designated "M20."

watched Perseverance launch

Watched the NASA-ULA launch of the Mars Perseverance rover and Ingenuity drone.

Wednesday, July 29, 2020

tested sharing

Participating in sharing test conducted by Andrew with Tanya, Claudio, Ennio, and Ward. Tried to share the Moon but clouds interfered. Still, the "direct" sharing to OBS worked and I was able to do so via a 50-foot ethernet cable to my LAN.

caught up on comments

I apologise to my readers who leave comments. 

For some reason, the email address that was used to send me alerts about pending comments was deleted. Consequently, I missed out on a bunch of notifications. Sorry! 

Not ignoring you. Really.

I approved a whole bunch of comments going back a ways... And I added my email back into the blogger backend. So hopefully everything's on track again! 

Thanks for reading! Always enjoy your comments.

tested MallinCam Universe (Bradford)

When I saw the CalSky weather alerts for Bradford, I decided it would be a good time to test the loaner MallinCam Universe from Andrew.

I hatched the idea of setting up on the deck to get a bit more elevation. Improve my chances of seeing the gas giants. Or prolong the viewing windows. As I began hauling gear out back, I noted the Moon, just past first quarter. Oh, hello! You will serve as a target for aligning and focusing.
Instrument: Celestron 8-inch SCT
Mount: Vixen Super Polaris
Method: slewing and tracking with IDEA GoToStar
Completed a minimal setup. Celestron 8 on the Vixen Super Polaris, no computer for targeting, not needed, I'd do everything from the hand controller. Dew gear, if needed, left in case. Although I did install the dew cap (happy Mr Briggs?). One eyepiece to aim but then I removed the ocular and mirror diagonal. MallinCam. It's a beast. Power and data cables. Win 10 computer 64-bit for MallinCam ops and image capture. Look at that, the image was near focus! Good! That answered a question immediately, I would not need an extension tube. Bungee cords and tarp for later...

hooked up, it works

Sent Andrew a pic to show everything was working, at least in terms of capture.

It occurred to me that the timing of this was eerily appropriate. I looked in Mare Nubium. Well, look at that! There's the Straight Wall. Easy to see. Ha! Is that a life list first? [ed: Nope. Viewed from Toronto in August 2009... 11 years ago!]

Installed my custom extension cable for the hand controller. Helped me avoid inducing vibration into the mount. Brought the HC near my comfy chair.

Rotated the camera 90° to better match the sky view.

camera in a better orientation - USB up!

Noted the orientation of the USB cable.

Oh my. Lots of dust on the sensor.

screen snap from the MallinCam Universe app

Started exploring the software. Ugh. Painful memories starting coming back. Awkward weird strange software written with little regard for standards and common conventions. I waded through the user guide, as best as possible. It's no great shakes either. Why is the control panel so tall or long. Pain in the ... wrist... to constantly scroll up and down. Why no maximise, minimise, and restore buttons on the view window? Why does the Change Exp button text vary when you press it?! What does the Cross checkbox mean? Where is the text label field? Why does the pin feature not work properly? Where's the dark mode switch?! [ed: Which version am I using?]

Was the view correct, I wondered. Tried the Horizontal and the Vertical buttons. Unchecked was fine.

Tried recording video. Strangeness on the first one, zero bytes. The other recorded AVI files seem appropriate sizes but threw errors on playback or report weird durations. Something about encoding and compression?

screen grab from the second Moon movie

Southern region is lumpy.

Tried to record a movie on a zoomed in region. Didn't work. Colour sliders worked but I did not like the colour tone. Tried the "one touch" white balance. Weird result. Ugh.

sharpening set to medium

Tried the sharpening option. High up was too aggressive, medium was good.

Dialled out the drift as I had not aligned to Polaris. Minimised the drift.

Lathered up with repellent.

Rhonda joined me on the deck.

I played Clair de Lune on my phone.

The Moon started slipping behind clouds and apple tree leaves. Waited for Jupiter to emerge from its arboreal occultation.

Tagged Jupiter as it cleared the tree. Tried to record Jupiter video but the app kept reverting the filename entry back to "Moon4." Quit the app and restarted. Working. Sheesh.

Jupiter over-exposed at low power

With a long exposure and high gain, the moons were visible but the planet blown out. Too small.

Jupiter over-exposed at high power

Installed the PowerMate to double the magnification. Better.

surface details visible on Jupiter

Played with the exposure, gain, gamma, to get a decent view of Jupiter proper. But the moons disappeared of course.

cropped screen grab from the MU app

Finally Saturn appeared. Waited for good seeing to catch it.

Saved my settings in the app. Hopefully I'll be able to recall them later.

I fancied playing a bit with the recorded video. RegiStax, right, for planetary? It's been a while.

Saturn seemed quite orange to the naked eye and Jupiter also appeared a little bit yellowed. I wondered if there was smoke or particulate but didn't see any nearby fires.

It was a beautiful night. Pleasant temperature and not humid. Checked the conditions in Good To Stargaze.

main screen grab from GTS

The good to go indicator showed. I'm on it!

detailed screen grab from GTS

The detailed report showed the humidity around 75%. Didn't seem that high.

A few minutes before midnight, I dismounted the camera. Installed the baader planetarium eyepiece. Then the Pentax. Rhonda and I enjoyed the view, identified the many moons of Saturn, and tagged the C ring. I was very happy to see it with my eyeball! Beautiful!

Clouds returned which I took as a cue.

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As I moved equipment back indoors, I ruminated on the MallinCam. Certainly the camera is significantly better, much better resolution, no obvious hot pixels. Great that a proprietary RS-422 cable is no longer needed. But the software continues to be extremely clunky. And the documentation is not good. It was terrible before with the older systems. This is a step up, clearly a lot of work went into it. But this is not the way to do it. Of all the questions I had and all the searches I conducted, the manual only gave me about 10% of the information that I needed. It's a shame. Alas, it works satisfactorily and only failed once, directly. 

There is the unresolved issue of badly constructed AVI files though... I have a feeling all the recorded video I captured is not good.

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My persnickety attitudes about documentation and software quality aside, tonight was an experiment night. I wanted to test the MallinCam Universe on my rig and sort any major issues. There were none. It works, I didn't need an extension tube, my magnifier worked, I was able to wrangle the software. Another test was to gauge the visibility of Jupiter and Saturn from home. Quite good from the deck.

Next things to figure out are how can video from my laptop get through the internet to Andrew. Will it work through my wifi or will I need to make a hardline connection?

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At 10:14 PM, Rhonda spotted the ISS at the end of its pass.

Sunday, July 26, 2020

found final dew heater build video

Found the edited version of my online video presentation for how to build a custom dew heater. I noted the thumbnail cutaway image I recently made. Thank you, Andrew.

custom dew heater guts

I delivered this presentation on 17 Jun within the Recreational Astronomy Night virtual meeting for the RASC Toronto Centre.