I posted another image I shot during the September full super moon on Astrobin. It is of the Bubble Nebula and incorporates Ha narrowband data. Using the technique described in this video, which I call Strategic Frequency Acquisition, I was able to remove the effects of the moonlight from it too, even though the moon on night 1 was at 100% and on night 2 was at 97%. You can see it here: www.astrobin.com/ip7whc/D/ Also, I have found a way to sharpen the information even further by applying gamma constriction to the high frequency information. I'll cover how to do this in a future video. You can see the improved version of IC 5146 here: www.astrobin.com/pqovq6/B/
The things we can now do are just amazing. I just finished creating the best Bubble Nebula I've ever made using data shot when the moon was at 100%, 97%, 84% and 74%. The moon is no barrier with this technique. Go to my post page to see it.
Wow, what a game changer. I use OSC so that might be more prone to moonlight leaking in to my images, but within a few years I'm definitely going to be upgrading my rig to do LRGB (very exciting!!).
I am almost certain you can use this with an OSC camera, you will just need to be a bit more careful with acquiring your base information as OSCs are a bit less efficient with color filters and you cannot do strategic filtering with them.
In a suburban area with trees and houses, there is no horizon less than 40 degrees. How does one acquire these images with the blue and green filters. Thanks
Brilliant! I wonder if some of these techniques would apply to light polluted skies... Except that you won't have the chance to shoot good high frequency sub frames.
I would guess you can use the technique from light polluted regions but I live in the backwoods and have no practical means to test this. But, as you said, you would not ever be able to get good base (low frequency) information for your foundation from an area of light pollution. However, if you are out of town, what you could do is shoot one or more targets and acquire your base information, then get the high layer information for those targets later from your home under light pollution. That's only an educated guess yet. I have no way to test it.
@@SKYST0RY That's very interesting, it gives me ideas to get better images while imaging most of the time from my place. In any cases I'll dig into your videos about frequency separation. Keep on your good work!
I know of no reason why it won't work with an OSC, but I haven't experimented with an OSC yet. But ultimately an OSC is just a mono camera with a Bayer in front of it (sort of like permanently affixed RGB filters.) Since the HF is very resistant to moonlight, you should be fine capturing your high layer information with an OSC with a UV/IR cut filter. But since an OSC is much less efficient in shooting specific frequencies or color ranges of light, you should capture your base information under darker conditions. Any moon phase under 50% - 60% should be fine.
I posted another image I shot during the September full super moon on Astrobin. It is of the Bubble Nebula and incorporates Ha narrowband data. Using the technique described in this video, which I call Strategic Frequency Acquisition, I was able to remove the effects of the moonlight from it too, even though the moon on night 1 was at 100% and on night 2 was at 97%. You can see it here: www.astrobin.com/ip7whc/D/
Also, I have found a way to sharpen the information even further by applying gamma constriction to the high frequency information. I'll cover how to do this in a future video. You can see the improved version of IC 5146 here: www.astrobin.com/pqovq6/B/
Just started this hobby and I'm impressed by the level of sophistication that is possible today.
The things we can now do are just amazing. I just finished creating the best Bubble Nebula I've ever made using data shot when the moon was at 100%, 97%, 84% and 74%. The moon is no barrier with this technique. Go to my post page to see it.
Bare in mind sky story is imaging in a bortle 2 i think. Many imagers will be in much more light polluted areas and other techniques may be required
this is fascinating, exciting, mind bending and also somewhat daunting... i am engaged though!
Pretty interesting and amazing approach. Have to give this a try
Very informative. Liked very much.
Wow, what a game changer. I use OSC so that might be more prone to moonlight leaking in to my images, but within a few years I'm definitely going to be upgrading my rig to do LRGB (very exciting!!).
I am almost certain you can use this with an OSC camera, you will just need to be a bit more careful with acquiring your base information as OSCs are a bit less efficient with color filters and you cannot do strategic filtering with them.
In a suburban area with trees and houses, there is no horizon less than 40 degrees. How does one acquire these images with the blue and green filters. Thanks
Brilliant! Thank you.
Brilliant! I wonder if some of these techniques would apply to light polluted skies... Except that you won't have the chance to shoot good high frequency sub frames.
I would guess you can use the technique from light polluted regions but I live in the backwoods and have no practical means to test this. But, as you said, you would not ever be able to get good base (low frequency) information for your foundation from an area of light pollution. However, if you are out of town, what you could do is shoot one or more targets and acquire your base information, then get the high layer information for those targets later from your home under light pollution. That's only an educated guess yet. I have no way to test it.
@@SKYST0RY That's very interesting, it gives me ideas to get better images while imaging most of the time from my place. In any cases I'll dig into your videos about frequency separation. Keep on your good work!
Nice video
so wont work on a broadband target then. on osc
It should work. Just be a bit more careful capturing your base information.
will this work on a broadband target using only uvir ?
I know of no reason why it won't work with an OSC, but I haven't experimented with an OSC yet. But ultimately an OSC is just a mono camera with a Bayer in front of it (sort of like permanently affixed RGB filters.) Since the HF is very resistant to moonlight, you should be fine capturing your high layer information with an OSC with a UV/IR cut filter. But since an OSC is much less efficient in shooting specific frequencies or color ranges of light, you should capture your base information under darker conditions. Any moon phase under 50% - 60% should be fine.