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Narrowband filter for planetary nebula imaging.

Filters Imaging
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#1 Iones

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Posted 20 June 2021 - 11:53 PM

Good day all,

 

This is my first post on CN. I have an 8 inch SCT (with 0.63 reducer), a camera with a small FOV (ZWO ASI 178MC) and most of the time I am restricted to imaging from a bortle 9 sky. Therefore, planetary nebulas are very interesting targets for me due to their higher surface brightness and small size.

 

I am currently using a Baader Neodymium, Moon and Skyglow filter  to image and I was wondering if you had any recommendations for good filters (1&1/4) that would work well with most planetary nebulas.

 

Are narrowband filters a good options or should I stick to broadband?

 

Thank you,

 

 



#2 Tapio

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Posted 21 June 2021 - 02:07 AM

NB filters are not so good if you have color camera and specially if it's not cooled (as they require longer exposures).

I would wait until you get a cooled mono camera.


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#3 Stelios

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Posted 21 June 2021 - 02:14 AM

Broadband from Bortle 9 skies is likely to disappoint.

 

Try something like the L-Extreme. 


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#4 Iones

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Posted 21 June 2021 - 01:53 PM

NB filters are not so good if you have color camera and specially if it's not cooled (as they require longer exposures).

I would wait until you get a cooled mono camera.

That is a good point. The maximum I usually use is 30 seconds.



#5 Iones

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Posted 21 June 2021 - 01:54 PM

Broadband from Bortle 9 skies is likely to disappoint.

 

Try something like the L-Extreme. 

Thanks for the suggestion will look into it. 




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