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Old 20-03-2021, 01:40 PM
RugbyRene (Rene)
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What filter for bortle 3 skies

Hi,

I'll be going to a bortle 3 site in the Snowy Mountains in May and I was wondering what sort of filter would be best for a OSC (ASI2600MC)? I'll be using it with a SW Esprit 100ED.

I have an IDAS P1 LPR filter which I use in my normal bortle 6 skies in Sydney but have heard it would be better using a UV/IR cut filter when visiting dark skies.

Rene
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Old 20-03-2021, 03:13 PM
Startrek (Martin)
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Originally Posted by RugbyRene View Post
Hi,

I'll be going to a bortle 3 site in the Snowy Mountains in May and I was wondering what sort of filter would be best for a OSC (ASI2600MC)? I'll be using it with a SW Esprit 100ED.

I have an IDAS P1 LPR filter which I use in my normal bortle 6 skies in Sydney but have heard it would be better using a UV/IR cut filter when visiting dark skies.

Rene
Rene,
I use my 2600MC under both Bortle 8 and Bortle 3 skies
Under Bortle 3 skies I don’t use any filters during the dark , under a >30% moon phase I use a Duoband filter which works well with all types of nebula
I only shoot galaxies during the dark definitely without a filter
I use a 8” f5 newt ( 1000mm fl ) under Bortle 3 skies
Cheers
Martin
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Old 21-03-2021, 06:53 AM
RugbyRene (Rene)
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Originally Posted by Startrek View Post
Rene,
I use my 2600MC under both Bortle 8 and Bortle 3 skies
Under Bortle 3 skies I don’t use any filters during the dark , under a >30% moon phase I use a Duoband filter which works well with all types of nebula
I only shoot galaxies during the dark definitely without a filter
I use a 8” f5 newt ( 1000mm fl ) under Bortle 3 skies
Cheers
Martin
Thanks Martin. I’ll be buying a 2600MC soon and I’ll be down in the Snowy Mountains from the 15th of May which will be just past new moon.

I’ve heard some people use a UV/IR cut filter to prevent star bloat.
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Old 21-03-2021, 07:49 AM
Startrek (Martin)
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Originally Posted by RugbyRene View Post
Thanks Martin. I’ll be buying a 2600MC soon and I’ll be down in the Snowy Mountains from the 15th of May which will be just past new moon.

I’ve heard some people use a UV/IR cut filter to prevent star bloat.
Rene
The 2600MC already has an IR cut filter in front of the sensor , most previous ZWO cameras only had an AR protective window in front of the sensor
Martin
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  #5  
Old 21-03-2021, 10:05 AM
RugbyRene (Rene)
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Rene
The 2600MC already has an IR cut filter in front of the sensor , most previous ZWO cameras only had an AR protective window in front of the sensor
Martin
Awesome. Thanks.
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