HFG1

[Petergoodhew]

HFG1 (PK 136+05) is a very old large, low-surface-brightness planetary nebula in Cassiopeia that was discovered by Heckathorn, Fesen, and Gull in 1982. It surrounds, and was produced by, a binary star system (V664 Cas) that is moving rapidly through our Galaxy. The star is moving towards the lower left of the image. As HFG1 plows through the interstellar medium, a bluish bowshock is produced; and a red trail of gas is left behind in its wake.

Astrodon Blue: 10x300"
Astrodon Green: 10x300"
Astrodon Lum: 11x600"
Astrodon Red: 10x300"
Astrodon OIII: 35x1800s bin 2x2
Astrodon Ha: 33x1800s bin 2x2

Total Integration: 38 hours

Captured on my dual rig in Spain.
Scopes: APM TMB LZOS 152 (6" aperture 1200mm focal length)
Cameras: QSI6120wsg8
Mount: 10Micron GM2000 HPS

Ref: Monthly Notices of the Royal Astronomical Society 396(2):1186 - 1188 · June 2009

[Rodd]

That looks like a little jellyfish.  A blue bottle.  Really great pic. I am surprised it wasn’t taken with a larger scope. Before I read the scope I thought it would have been a 17-24”.  Encouraging!  Is it a crop?

Rodd

[Petergoodhew]

16 minutes ago, Rodd said:

Is it a crop?

Just a slight edge crop Rodd to tidy things up.

[Rodd]

Where exactly is it?  It seems rather large. I would like to try with 1,000mm.  A bit less than your 1,200 but it is very large in your FOV. 

[Petergoodhew]

2 hours ago, Rodd said:

Where exactly is it?  It seems rather large. I would like to try with 1,000mm.  A bit less than your 1,200 but it is very large in your FOV. 

Rodd it's in Cassiopeia: RA 03 03 47.01  DEC +64 54 35.7

It would fit really well at 1000mm.

[Rodd]

I will have to put some effort into it as it is not in CDC. And I won’t get the bubble.  Maybe. If I frame it right

Edited November 9, 2019 by Rodd

[Allinthehead]

Fabulous image Peter.

[ollypenrice]

Sensational result, Peter. The best I've seen. (I've seen plenty where I was left wondering what I was supposed to be looking at!)

Your PN images are always terrific but this is at an even higher level.

Olly

Edit: The 6 inch refractor strikes again! Yesssssss.......

Edited November 9, 2019 by ollypenrice

[steppenwolf]

An absolutely stunning image, Peter!

[fireballxl5]

Cracking image of an unusual object. I love the colours🙂

For info, here's the local field from SkyMap Pro v10, showing the FoV given by two cameras that I can use with my 1090mm focal length 6" refractor, one giving 0.7arcsec/pixel, the other 1.7arcsec/pixel. The full-frame camera would also capture PK 136+ 4.1. 

[MartinB]

A wonderful image Peter.  Looks like ET with a hat on!