Are longer sub frames worth it? Testing an Ha filter under Light Pollution.

Have you ever seen a comparison of two different stacked images with different sub-exposures and was thought, "those don't look that different?" Well, they might not be that different after all! In this video, we'll see whether longer sub frames really are worth the trouble when you're shooting in narrowband under light polluted skies!

Video on my updated SNR App:    • With my SNR Calculator! Predict how many s...  

Recap: 00:00
Introduction: 00:30
SNR Theory: 02:03
Equipment, Target and Filters: 04:24
Longer Sub Frames?: 07:45
The Experiment!: 09:36
Gut Checks: 11:38
Only Integration Time?: 13:36
You Can Hire Me!: 17:50
Light Pollution: 19:09
My Ha Filter: 20:24
Does It Make Sense?: 21:25
The MT: 24:31



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Skywatcher 80mm F7.5 Doublet https://amzn.to/47mbfZi
ZWO EFW mini filter wheel https://amzn.to/48OxhoN
Optolong LRGB Filter Set (1.25") https://amzn.to/47r23Tw
Orion 0.8x Reducer https://amzn.to/47s64a4
USB RJ45 Cable for Controlling Mount https://amzn.to/4aPlIzu
Raspberry Pi to control mount https://amzn.to/48mTBWH
R Pi case with touch screen https://amzn.to/3HvdNKl
ZWO Autofocuser https://amzn.to/3Skg0hX

ZWO 294MM Pro Camera: https://bit.ly/3tZmjOo
HEQ5 Mount: https://bit.ly/3O7VQVz (mine is Orion Sirius, which is equivalent)
ZWO Filter Wheel: https://bit.ly/3Soo5lw
Optolong Filters (LRGB, SII, Ha, OIII): https://bit.ly/3SlEPtJ (the Ha and OIII narrowband filters are better than what I have)
Skywatcher Evostar 80mm: https://bit.ly/4bfVjev (equivalent lens)
USB RJ45 Cable: https://bit.ly/48FRj50 (connects mount to laptop directly; mine is a different brand, but this should do)
ZWO Autofocuser: https://bit.ly/425XUDB
0.8x Reducer: https://bit.ly/3tQlbg7 (mine is Orion, but this should be equivalent)

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