Uploaded January 2026 | Updated September 2026, 10 minutes ago
Have you ever seen a comparison of two different stacked images with different sub-exposures and thought, "I wonder if the narrowband filters made a difference?" Let's do some tests to find out how bandwidth affects things.
Video on my updated SNR App: youtube.com/watch?v=d1Xccig6Jl8
Introduction: 00:00
The Gear: 03:02
Simulating Blocking: 04:44
Sub Frame Inspection: 07:16
Simulating Noise: 09:55
Collecting Data: 11:43
Sneaking a Peek: 13:40
Modeling the Signal: 16:15
Finding Something Interesting: 19:19
Keys: 20:45
Become a buymeacoffee member to help choose which products I review: buymeacoffee.com/deepskydetail
Affiliate Links:
highpointscientific.com/?rfsn=8751569.cc9d94
agenaastro.com/?rfsn=7802039.3f4caf
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 seen a comparison of two different stacked images with different sub-exposures and thought, "I wonder if the narrowband filters made a difference?" Let's do some tests to find out how bandwidth affects things.
Video on my updated SNR App: youtube.com/watch?v=d1Xccig6Jl8
Introduction: 00:00
The Gear: 03:02
Simulating Blocking: 04:44
Sub Frame Inspection: 07:16
Simulating Noise: 09:55
Collecting Data: 11:43
Sneaking a Peek: 13:40
Modeling the Signal: 16:15
Finding Something Interesting: 19:19
Keys: 20:45
Become a buymeacoffee member to help choose which products I review: buymeacoffee.com/deepskydetail
Affiliate Links:
highpointscientific.com/?rfsn=8751569.cc9d94
agenaastro.com/?rfsn=7802039.3f4caf
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
