NGC1491 - Fossil Footprint nebula

[Aramcheck]

NGC1491 in Perseus from 13/14 Feb. (SW 200pds + ZWO2600MCPro + AZEQ6 with OAG & ZWO 120mm + Bortle 7/8 sky). 60 x 1min exposures for the stars with IDAS LP3 light pollution filter & approx 146 x 3min exposures with the Optolong L'Extreme dual narrowband filter.
This was my first attempt with the L'Extreme so on the first night the subs were a bit out of focus as I simply switched from the IDAS after the first hour, without refocusing.

The screengrab of the unprocessed data (with just an autostretch) shows what a difference the L'Extreme makes & also the advantage of additional exposure time...

Cheers
Ivor

[carastro]

I just did this in narrowband.  Nice to see it in broadband. 
 

Carole

Edited February 18, 2023 by carastro

[Aramcheck]

17 hours ago, carastro said:

I just did this in narrowband....

In your image you also got the much fainter outer HII region, which is the kind of thing I always struggle with. It also shows what looks like a larger second outer bubble around the O5 star BD+50 866.

Cheers
Ivor