Proving Sub-Length Matters! #science #astrophotography #space #astronomy #experiment @deepskydetail

Uploaded July 2024 | Updated September 2026, 51 minutes ago

Does sub-exposure length matter in astrophotography? How short is too short? I did an experiment that provides evidence for taking longer subs when you stack images!

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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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Proving Sub-Length Matters! #science #astrophotography #space #astronomy #experiment

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$He may have saved astrophotography for us... (Reupload with better audio) Ever wonder where a Bahtinov mask came from, why its so popular, and why anyone can 3D print it? Find out! This is a reupload with better audio. By the way, check out my web app and sharpening tool! Links from the video: https://astronomy.ru/forum/index.php/topic,10421.0.html https://www.cloudynights.com/topic/178843-revolutionary-new-way-of-focusing-no-less/#entry2309830 Other useful information: https://www.cloudynights.com/articles/cat/articles/optical-theory/fraunhofer-diffraction-and-its-effects-on-aperture-masks-a-primer-r1953 @astro_channels interview is here: https://www.youtube.com/watch?v=japrPm7LxVo #astronomy #astrophotography #photography #diffraction #telescopes #hubble #focus #telescope nqFI29h8W0Fp9UkKOJry For those interested, here is the gear I use (or equivalent; Orion has discontinued some of their products, so the equivalent skywatcher products are listed). Most of the links are Amazon Affiliate links. Thanks! Skywatcher HEQ5 Mount https://amzn.to/3NVrVQi Skywatcher 80mm F7.5 Doublet https://amzn.to/47mbfZi ZWO EFW mini filter wheel https://amzn.to/48OxhoN Optolong LRGB Filter Set (1.25) https://amzn.to/47r23Tw Orion 0.8x Reducer https://amzn.to/47s64a4 USB RJ45 Cable for Controlling Mount https://amzn.to/4aPlIzu Raspberry Pi to control mount https://amzn.to/48mTBWH R Pi case with touch screen https://amzn.to/3HvdNKl ZWO Autofocuser https://amzn.to/3Skg0hX$

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