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Posted: **Sat Nov 07, 2020 3:23 pm**

Probably my last image until after the upcoming storm/hurricane.

The Bubble Nebula & M52 open star cluster using the ZWO ASI294mm Pro on an 80mm APO triplet with Chroma Ha and OIII filters- only 4.4 hrs total integration.

: Widefield Bubble Nebula in HOOv3.jpg (836.01 KiB) Viewed 906 times

Posted: **Sat Nov 07, 2020 5:12 pm**

Very nice Bruce. Doubling the Ha over the OIII (from your Astrobin description) looks to have worked well.

Dave

Posted: **Sat Nov 07, 2020 6:48 pm**

Thanks much for the compliment, Dave. I'm getting better with what amount of each filter works best with the particular DSO and what scope I use. Experimenting is part of the fun but having limited clear skies makes it a challenge to get it the way one hopes.

Bruce

Posted: **Sat Nov 07, 2020 7:43 pm**

Bruce

This one https://www.astrobin.com/44bc0e/B/?nc=userwas 4x more OIII than Ha. It depends on what the makeup of the object is as to what works but I haven't understood that enough yet.

Dave

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The Bubble Nebula & M52 in HOO

The Bubble Nebula & M52 in HOO

Re: The Bubble Nebula & M52 in HOO

Re: The Bubble Nebula & M52 in HOO

Re: The Bubble Nebula & M52 in HOO