Cookie consent

AstroBin saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing AstroBin without changing the browser settings, you grant us permission to store that information on your device.

I agree
Getting plate-solving status, please wait...
Barnard 175, vdB 152, HH 450 and a SNR, 


            Kevin Morefield

Barnard 175, vdB 152, HH 450 and a SNR

Technical card

Resolution: 3994x3896

Dates:Dec. 12, 2018

Astrodon Blue: 23x600" -30C bin 1x1
Astrodon Green: 24x600" -30C bin 1x1
Astrodon Ha 5 nm: 57x1200" -30C bin 1x1
Astrodon Luminance: 29x600" -30C bin 1x1
Astrodon Red: 27x600" -30C bin 1x1

Integration: 36.2 hours

Darks: ~20

Flats: ~20

Bias: ~20

Avg. Moon age: 4.73 days

Avg. Moon phase: 23.25%

Bortle Dark-Sky Scale: 3.00 job: 2476682

Locations: Sierra Remote Observatory, Auberry, California, United States

Data source: Own remote observatory

Remote source: Sierra Remote Observatories


Lot's going on in this image - Barnard 175 is a Bok globule with a reflection nebula, vdB 152 on top of it. Seemingly embedded in the nebula is Herbig Haro object HH450 (the little bright red spot in the brown dust). Who doesn't love a Bok globule and a Herbig Haro object? But what really drew me to this was seeing the supernova remnant that lies behind all of these.

I've not seen any official designation for the SNR, possibly because is very faint. I ended up shooting 57 twenty minute Ha subs to try and bring it out as best I could. The LRGB subs total 17.17 hours here.


Gabriel located great source for this region that identifies the SNR as G110.3+11.3. It also details how these objects may be interacting:

“The filaments comprising G110.3+11.3 appear brightest where they come closest to B175. Thus, the supernova remnant must be interacting with the relatively tenuous outer parts of this small molecular cloud, and we conclude that G110.3+11.3 is at the same distance as B175...

...The Bok globule B175 exhibits two different types of shock waves; one from a dying star and another from a forming star. Amazingly, the two shocks appear to be heading toward a frontal collision. Assuming a tangential HH flow velocity of 100 km s-1 and a velocity of about 300 km s-1 for the supernova remnant, the encounter will take place about 1000 yr from now if both shocks are moving in the plane of the sky.”

They also noted that this may be the closest known supernova remnant. See the URL in Gabriel’s comment.



Kevin Morefield
License: None (All rights reserved)


  • Barnard 175, vdB 152, HH 450 and a SNR, 


            Kevin Morefield
  • Final
    Barnard 175, vdB 152, HH 450 and a SNR, 


            Kevin Morefield


Black level adjustment


Barnard 175, vdB 152, HH 450 and a SNR, 


            Kevin Morefield