Howell-Crisp 1 (HoCr1) in IC444

[gorann]

When processing my recent image of the Jellyfish and IC444, I noticed a small PN-like object in IC444. Loking for it in Aladin Sky Atlas I found that it was HoCr 1, a quite small (73") planetary nebula also known as Howell-Crisp 1. It was discovered relatively recently (2006) by amateur astronomers Michael Howell and Richard Crisp, see: www.horizontalheavens.com/planetarynebulaproject.htm. I have here made a drastic crop and further processed the image to make the PN stand out a bit better, and I am slightly impressed by the RASA8 to pick up this small thing under a full moon. There are of course some more detailed images of it using longer focal length scopes, like this nice one by @Petergoodhew: https://www.astrobin.com/pn6nlr/

I attach my Jellyfish nebula image where I have marked the PN.

So, caught with my dual-RASA8 rig and ASI2600MC with IDAS NBZ filter (Ha+Oiii). 191 x 5 min. Processed in PI and PS, including BlurXT.

Cheers, Göran

Edited February 8, 2023 by gorann

[Maximidius]

An incredible find in a great image. I'm surprised it doesn't look more pixelated at such a close crop. 

[gorann]

4 hours ago, Maximidius said:

An incredible find in a great image. I'm surprised it doesn't look more pixelated at such a close crop. 

Thanks a lot! These new CMOS cameras have small pixels, but I did help it along by doubling the the "resolution" (pixels per inch) in PS before I started processing this crop.

Edited February 8, 2023 by gorann