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SGL 2021 Challenge 7 - The Terminator


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Plato and Vallis Alpes

Date: 13th November 2021
Scope: SkyMax 127
Mount: EQ5
Camera: ASI224MC (via ASICap)
Capture size: 1304x976px
Capture format: RAW8

Gain: 200
Exposure: 5ms

Best 25% stacked of 3000 frames using AS!3. Wavelet sharpening via Registax 6, final level adjustments in Photoshop.

2021-11-13-2137_1-Moon_moon_2237_1_stacked_20__lapl4_ap5175_r6 copy.jpg

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  • 2 weeks later...

Something different for a change, a picture of the terminator in daylight.

Date - 25th Nov 2021
Time - 10:10
Location - Ireland

Phase - 0.71 Waning Gibbous
Constellation - Cancer
Magnitude - -12.20
Distance - 395659.14 km
Diameter 30.20'

Camera - Canon 800D
Lens - 18-55mm
Telescope - 130P-DS
Mount - EQ5-Pro

Method
-One foreground picture at 55mm
-One picture of the moon through the telescope
-Cropped and edited in PS

204194510_Terminatorindaylight.thumb.jpg.cf446cfa6542baf1b4cbf5504d0c24ae.jpg

Edited by Pitch Black Skies
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23 Nov, Rupes Altai and the surrounding regions.  STF7 (180mm f/10), ASI290MM w an Astronomik 642nm filter.

I find this region v rewarding when its near the terminator b/c of the different textures.  I like the longer shadow of the middle portion of the Rupes Altai escarpment - I guess that's a slightly taller feature casting a longer shadow?

Cheers

Moon_230906_l3_P10_ap2017_imppg(211126)_crop_gimp.png

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This is my entry, taken on the 10th December 2021, taken at 1800 just before the moon set. i tried out my ASI462mc for this and being new i recorded in 8bit mode causing me issues with registax. i had to change the PIPP output from Tiff to Bmp to get it to work. im not sure if i lost any detail by not changing the bit rate but im happy with the outcome. 

33,000 frames were taken from the video and the best 3,000 were stacked in Registax, i had a play with the wavelet sliders not really knowing how they work just stopped when i was happy. 

216699815_20211210MoonStack.thumb.png.f3e86a9776cf7894192dd93ae9f10b26.png

Regards

Danny

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This is my 8 year old daughters, She watched me with my entry above and wanted to take her own picture. you may disqualify as really both of us made this. I set up my Eos M3 to wifi control from my phone and she took 500 frames with an intervalometer app. i showed her what settings to use in PIPP, Registax as they were still set up from my image. and this is her image shes proud of. again please disqualify as a two person effort. 

2081159535_Daisies-MaesMoon.thumb.png.3de0e269e8c09fdeada54e1d896929db.png

Regards

Danny

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Mare Crisium

Date: 21st November 2021
Scope: SkyMax 127
Mount: EQ5
Camera: ASI224MC (via ASICap)
Filter: Baader 685nm IR pass
Capture size: 1304x976px
Capture format: RAW8

Gain: 700
Exposure: 7ms

Best 20% stacked of 3000 frames using AS!3. Wavelet sharpening via Registax 6, final level adjustments in Photoshop.

2021-11-21-2125_9-Moon_moon_2125_9_stacked_20__lapl4_ap4253_r6 copy.jpg

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Eratosthenes and the ghosts
Phantom craters are craters that have lost their characteristic shape, meaning a deep hole with high walls and often prominent central peaks. They are much more subtle, often difficult to recognize like the ghost I described in 2012.
In this photo we have two easily visible ghosts, they are, Wallace, in which the southeast walls are missing, and Stadius, already in a much more advanced stage of degradation, both indicated in the photo.
The right time to observe this class of craters is when they are close to the terminator, as at this moment, even small elevations and depressions in the ground are easily evident.
A ghost crater is a crater buried in lava, with only the crater rim visible or sometimes not even that.
How are they formed? Let's say a regular crater forms from an asteroid/meteor impact at some point. Thereafter, during the period of active volcanism on the Moon, lava eruptions in the area may fill the crater to the rim, leaving only the rim behind.
Many of these phantom craters were located on the moon, including the one I posted a new topic on Astrobin recently: https://www.astrobin.com/0fkqmh/, as well as was described in the book "Astrofotografia Amadora no Brasil, chap. 19, page 282".

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Crikey!  I never knew a quarter of a million miles could disappear so easily!  Well not easily really, a lot of talent, dedication and patience has gone into the splendid entries for this challenge,  The challenge is now closed and the results will be announced within the next 2 weeks.

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