𝗠𝘆 (𝗳𝗿𝗲𝗲) 𝗮𝗽𝗽 𝗰𝗮𝗻 𝘁𝗲𝗹𝗹 𝘆𝗼𝘂! And, it 𝗰𝗮𝗻 𝗰𝗮𝗹𝗰𝘂𝗹𝗮𝘁𝗲 𝗺𝘂𝗹𝘁𝗶𝗽𝗹𝗲 𝗳𝗶𝗹𝘁𝗲𝗿𝘀 :)

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Have you ever finished an imaging session, and asked yourself, "Hmmm... I wonder how much more integration time/sub exposures I need to get a good image?" In this video, I'll show you my web application that can help you figure that out! Astrophotography answers are sometimes complicated. But my free web app can help make things simpler.
deepskydetail.shinyapps.io/Ca...
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Affiliate Links:
Skywatcher HEQ5 Mount amzn.to/3NVrVQi
Skywatcher 80mm F7.5 Doublet amzn.to/47mbfZi
ZWO EFW mini filter wheel amzn.to/48OxhoN
Optolong LRGB Filter Set (1.25") amzn.to/47r23Tw
Orion 0.8x Reducer amzn.to/47s64a4
USB RJ45 Cable for Controlling Mount amzn.to/4aPlIzu
Raspberry Pi to control mount amzn.to/48mTBWH
R Pi case with touch screen amzn.to/3HvdNKl
ZWO Autofocuser amzn.to/3Skg0hX
ZWO 294MM Pro Camera: bit.ly/3tZmjOo
HEQ5 Mount: bit.ly/3O7VQVz (mine is Orion Sirius, which is equivalent)
ZWO Filter Wheel: bit.ly/3Soo5lw
Optolong Filters (LRGB, SII, Ha, OIII): bit.ly/3SlEPtJ (the Ha and OIII narrowband filters are better than what I have)
Skywatcher Evostar 80mm: bit.ly/4bfVjev (equivalent lens)
USB RJ45 Cable: bit.ly/48FRj50 (connects mount to laptop directly; mine is a different brand, but this should do)
ZWO Autofocuser: bit.ly/425XUDB
0.8x Reducer: bit.ly/3tQlbg7 (mine is Orion, but this should be equivalent)
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Опубликовано:

9 июл 2024

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Комментарии : 37

@deepskydetail 25 дней назад

Discord invite link: discord.gg/rXmvTT5P

@anata5127 24 дня назад

I could tell this right after one frame is captured. If nothing is seen on initial frame, but there should be something there, then integration on this filter is 16+ hours.

@AstroAF 25 дней назад

Great enhancement Mark!

@deepskydetail 25 дней назад

Thanks, Doug!

@mschmalenbach 25 дней назад

Nicely done original and update - thank you!

@deepskydetail 25 дней назад

Thank you too!

@whyf16uy 25 дней назад

You help the community so much

@deepskydetail 25 дней назад

Thank you! :)

@carvrodrigo 24 дня назад

great updates friend!! Many thanks

@deepskydetail 24 дня назад

Thank you!! :)

@gregerianne3880 25 дней назад

This is terrific! Thanks so much for all the hard work you must have put into this. If I'm understanding correctly, I will need to have taken some subframes of a target prior to using this calculator, correct? I wonder (but I have no idea how!) if it's possible to make the app entirely predictive, i.e., predictions about sub exposures before ever imaging a target, by using an actual skyglow value for a particular site as measured by an SQM meter or a light pollution map. Thank you once again for this calculator! Much appreciated.

@deepskydetail 25 дней назад

Thank you! I wonder too if it could be automated. Thinking about it though it would be a pretty big task. You'd need to know aperture size, f-ratio, pixel size, brightness of the target... If I had enough data though with those variables, maybe I could do something like a statistical model to get a rough estimate! :)

@cratervanawesome 24 дня назад

Sorry if I missed it. Are these SNR values in db? I know the SNR scripts for PixInsight provide 2 numbers, one being larger and one being decibel.

@deepskydetail 24 дня назад

Good question. They're in raw SNR, not decibels. :)

@cratervanawesome 24 дня назад

@@deepskydetail Thanks. Handy tool for sure. My input numbers for my PlayerOne Poseidon-M and subs(measured with PixInsight's statistic process) were just so much lower i wasn't 100% sure I was using it properly (ha filter, DSO signal: 267, skyglow 151, 161 dark signal, 159 bias) but after putting everything in and my measured sensor info from sharp cap analysis it does seem to add up to fairly close to the SNRs i end up with from the number of frames I have.

@deepskydetail 23 дня назад

Thanks for the info! It's good to know things line up between the two tools :)

@malcolqwe2 8 дней назад

this begs the question, what is the SNR to aim for

@deepskydetail 7 дней назад

You can check out this video I made on it :) ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-eRKk3lNyXO8.html

@shubinternet 25 дней назад

What if you have something like a SeeStar S50, which doesn’t take some of those types of calibration frames? Where would we find this kind of information?

@deepskydetail 25 дней назад

I'm not 100% sure. Does the s50 calibrate the light frames automatically with dark and bias?

@odinhdd 25 дней назад

@@deepskydetail The seestar just takes dark frames and then calibrates the light frames for you as it live stacks

@scottkuntz4693 25 дней назад

Tried out the app but something doesn't make sense. Just to try it out I used your default values with 15s exposure. The result was 1429 subs for 5.95 hours. Then I changed it to 30s and got 1429 (teh same) subs for 11.91 hours! All other inputs remained the same.

@deepskydetail 25 дней назад

If you change the exposure time to 30s, the app will think your sub exposures are 30s long and will adjust things accordingly (5.95 x 2 = 11.9). To test a different sub-exposure time, you need to either input data from another sub frame that is 30 seconds long and use a comma (15, 30 in the sub exposure length box), or you can try the theoretical estimate using the slider called "Mult. exposure by __ times:"

@scottkuntz4693 25 дней назад

@@deepskydetail I'll try that!