Jump to content

stargazine_ep39_banner.thumb.jpg.b87bddaa2aded94d2a3456c0589a82b9.jpg

Recommended Posts

In the constellation Cepheus, at 1400 light years from Earth, lies vdB 152, a small blue reflection nebula located at the tip of the dark Bok nebula Barnard 175.  Embedded in the dark nebula is the Herbig Haro object HH 450. The faint red streak to the right of the reflection nebula is a supernova remnant known as SNR G110 + 11.3 which appears to be approaching vdB 152.

Some of my notes for those that might be interested:

Reflection nebulas are created when a nearby star illuminates the gas of at a nebula at an insufficient energy level to ionize the gas but strong enough to create light scattering that makes the dust visible.  Reflection nebulas mostly appear blue because particles in the nebula scatter blue light more efficiently than other wavelengths.

Bok nebulas are isolated and relatively small dark nebulas containing dense dust and gas from which star formation can occur.

Herbig Haro objects are bright patches of nebulosity that form when fast moving narrow jets of partially ionised of gas, ejected from a newly formed star, collide with nearby gas and dust at several hundred km/s.

The LRGB image below represents 12 hours integration time and was taken with my Esprit 150. An annotated image is also shown.

Alan

236985738_32.Final.thumb.jpg.3a59bd103173b325bc2d00ca3d970db5.jpg

 

Final_annotated.thumb.jpg.cc7b91ad42550051047baeb032f7b7cc.jpg

LIGHTS: L:28, R:13, G:14, B:17 x 600s, BIAS:100, DARKS:30, FLATS:40 all at -20C.

  • Like 24
Link to post
Share on other sites
22 hours ago, Adreneline said:

Excellent! A very impressive image.

Thanks for all the background info too.

Adrian

Thanks Adrian !

 

22 hours ago, ultranova said:

Wow admire your dedication to the image...I know this one is not for the faint of heart..

It's come out very nice  indeed, colours and processing to match.

Well done

Paul 

I'm glad you liked it Paul  - and you are correct in that the wide dynamic range of this object makes it a challenge  :happy11:

 

21 hours ago, MarkAR said:

Stunning image, beautifully processed.

Thanks for the comment. :hello:

Alan

Link to post
Share on other sites
11 hours ago, peter shah said:

that is up close and personal....great FOV...love the detail you have in the reflection...great job

Thanks Peter. 

8 hours ago, Laurin Dave said:

Marvellous image with lovely colours of an interesting object and only 12hrs..  Any idea what the blue Arc above left of VdB 152 is?  

Dave

Thanks for the comment Dave.  Hmmmmm..... I had a look in Aladin but cannot see anything marked so I presume it must be a faint reflection nebula, although the shape suggests some form of shock wave.  While I can see the object in other images, most scientific attention has been directed towards on the other side of Barnard 175 where the various remnants of the supernova explosion can be seen.  

8 hours ago, steppenwolf said:

Lovely - some amazing dust as well as the reflection nebulosity

Thanks Steve .:happy11:

4 hours ago, gorann said:

Outstanding image Alan! Amazing details. Really good advertisement for the Esprit 150!

Thanks - yes, the Esprit 150 is an excellent scope - if anyone is in the market for a large refactor, then it is definitely worth considering, particularly given the price compared to the competition..... :hello: 

  • Thanks 1
Link to post
Share on other sites
On 26/09/2020 at 10:21, Allinthehead said:

Great image Alan, I can't recall seeing detail like that in this target.

Thanks - I believe my imaging resolution of 0.7 arc seconds per pixel helps to bring out the details but it also makes imaging capture more challenging, particularly as I image unguided.

Alan

 

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By alan4908
      In the constellation Cepheus, at 1400 light years from Earth, lies vdB 152, a small blue reflection nebula located at the tip of the dark Bok nebula Barnard 175.  Embedded in the dark nebula is the Herbig Haro object HH 450. The faint red streak to the right of the reflection nebula is a supernova remnant known as SNR G110 + 11.3 which appears to be approaching vdB 152.
      Some of my notes for those that might be interested:
      Reflection nebulas are created when a nearby star illuminates the gas of at a nebula at an insufficient energy level to ionize the gas but strong enough to create light scattering that makes the dust visible.  Reflection nebulas mostly appear blue because particles in the nebula scatter blue light more efficiently than other wavelengths.
      Bok nebulas are isolated and relatively small dark nebulas containing dense dust and gas from which star formation can occur.
      Herbig Haro objects are bright patches of nebulosity that form when fast moving narrow jets of partially ionised of gas, ejected from a newly formed star, collide with nearby gas and dust at several hundred km/s.
      The LRGB image below represents 12 hours integration time and was taken with my Esprit 150.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.