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Old 08-02-2019, 08:21 AM
dan_iana (Daniel and Iana)
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dan_iana is offline
 
Join Date: Feb 2016
Location: Sydney, Australia
Posts: 22
Unsure which narrowband filters belong to which subs

Hey all,

Took some narrowband subs of M42 last night on our new ASI1600mm-pro.

What's the easiest way to tell which filter created each subs? I have labelled our filters in the filter wheel as H/S/O based on their packaging but the images that came out were quite surprising and made me think that possibly the filters where in incorrectly labelled packages (we bought them off a iceinspace user).

I'll post them tonight BUT at the following parameters (-10 sensor temp, 300 gain/50 brightness, mono8, 180sec subs):

Halpha - showed the least detail
Sii - showed a huge amount of detail but the core was massive and white
Oiii - similar to Sii

I've tried to find M42 narrowband subs to compare ours against but would have thought that (generally) Halpha would show the most detail when compared with Si/Oiii (but guess it depends on what you are imaging).

So ultimately, I just want to make sure that my filters are labelled correctly

Will post photos tonight, unless there is an easy way (e.g. look at some histogram in sharpcap or Adobe) to identify the filters based on the wavelength of light registered.
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