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Author Topic: Light plution filter  (Read 91 times)

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Offline clive

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Light plution filter
« on: 15:02:18, 06 December, 2017 »
Hi all when i imaged m33  luminence subs was 5 minutes  my red green blue subs were the same length 5 minutes but i noticed red green blue i could only see one or 2 stars so i asume this is because im useing s light pollution filter  on my ccd camera so does it mean ive got to take longer subs  i think ive done a blunder too when i incerted the filters in the filter wheel  im not 100 certing but my luminence filter was in no 1 position red 2 green 3 blue 4 but i mite have got the filter in rong position  so that could be telling me red green blue 5 minute subs were so dark or my light pollution filter is causeing it  or ive mixed the filters up  silly me

Offline Roger B

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Re: Light plution filter
« Reply #1 on: 20:39:56, 07 December, 2017 »
Is this with a screen stretch,  your subs will be RAW and need stretching,      I you think you have messed up installing the filters,  Id say take them out & re Do. 

Using a LP filter shouldn't really need longer exposures.   

Examples of the images would be nice to see.

Rog
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Offline clive

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Re: Light plution filter
« Reply #2 on: 20:59:34, 07 December, 2017 »
Ok roger ill check things out

 

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