Uploaded November 2025 | Updated September 2026, 18 hours ago
Have you ever finished an imaging session, and asked yourself, "Hmmm... I wonder why my fast telescope isn't doing as well as I think?" 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. And now it can estimate whether your filters don't match your telescope!
deepskydetail.shinyapps.io/Bandpass_Shift_Calculator
00:00 - Intro
02:00 - The theory - filter bandwidth
04:00 - Fast Telescopes
04:45 - Ideal SNR?
05:10 - The Pairing Problem
06:10 - Prism Demos
07:16 - How filters block light
08:07 - Using the calculator: Inputs
10:28 - Understanding outputs
12:52 - Editor's Note
14:11 - Adjusted F-Ratios
15:45 - Outro
@CuivTheLazyGeek's video: youtu.be/V4snlZYduNg?si=W0l1hfshRcPshXbu
@BrentMantooth's video on this topic: youtube.com/watch?v=IudhLAjqD8E
Become a buymeacoffee member to help choose which products I review: buymeacoffee.com/deepskydetail
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)
Join this channel to get access to perks:
youtube.com/channel/UCoI4bUAKNI3rdvesiNqtYJw/join
Have you ever finished an imaging session, and asked yourself, "Hmmm... I wonder why my fast telescope isn't doing as well as I think?" 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. And now it can estimate whether your filters don't match your telescope!
deepskydetail.shinyapps.io/Bandpass_Shift_Calculator
00:00 - Intro
02:00 - The theory - filter bandwidth
04:00 - Fast Telescopes
04:45 - Ideal SNR?
05:10 - The Pairing Problem
06:10 - Prism Demos
07:16 - How filters block light
08:07 - Using the calculator: Inputs
10:28 - Understanding outputs
12:52 - Editor's Note
14:11 - Adjusted F-Ratios
15:45 - Outro
@CuivTheLazyGeek's video: youtu.be/V4snlZYduNg?si=W0l1hfshRcPshXbu
@BrentMantooth's video on this topic: youtube.com/watch?v=IudhLAjqD8E
Become a buymeacoffee member to help choose which products I review: buymeacoffee.com/deepskydetail
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)
Join this channel to get access to perks:
youtube.com/channel/UCoI4bUAKNI3rdvesiNqtYJw/join
