VbB1

[alan4908]

Here's an image that you don't see often - vdB1 which is the first entry in the van den Bergh catalogue.

VdB1 is a small reflection nebula in the Cassiopeia constellation.  It's approximately 1600 light years distant and about 5 light years across.  It consists of dust and gas which are illuminated by bright nearby stars.  The scattered light from these stars appears blue since scattering is greater at shorter wavelengths.   

Another interesting object within the field of view, is a somewhat strange looking looped nebula.   This is an example of star formation and several herbig-haro (HH) objects are also located in this vicinity. HH objects are bright patches of nebulosity which are created when high speed partially ionised gases ejected by stars collide with nearby gas and dust.   I've marked the location of these objects on the annotated version below. 

The image below represents just under 13 hours integration time and was taken with my Esprit 150.

Alan

 

 

LIGHTS: 27, R:19, G:17, B: 14 x 600s, DARKS:30, BIAS:100, FLATS:40 all at -20C. 

[MarkAR]

Lovely capture, the HH does look unusual.

[alan potts]

Beautiful capture and as you say rarely done, I've never seen it before. Must find out where it is.

Alan

[Macavity]

As a (minor) point of info, it's FIRST in Steve O'Meara's "Secret Deep" Catalogue. 😛
(I've "done" many "Hidden Treasures" via EEVA. One day I must do the above too!)
It's nice to see some of these less common objects though - And imaged so well.

Edited July 18, 2020 by Macavity

[alan4908]

17 hours ago, MarkAR said:

Lovely capture, the HH does look unusual.

Thanks for the comment. Agree on your HH comment - these are quite unusual objects. 

16 hours ago, alan potts said:

Beautiful capture and as you say rarely done, I've never seen it before. Must find out where it is.

Alan

Thanks. 

VdB1 is close to the star Beta Cassiopeiae (or Caph) one of the main stars on the W (see below).  Although it was out of the field of view for the above image, I was getting a bit of stray light contamination from this star which I eliminated via Pixinsight's DBE routine. 

 

 

15 hours ago, Macavity said:

As a (minor) point of info, it's FIRST in Steve O'Meara's "Secret Deep" Catalogue. 😛
(I've "done" many "Hidden Treasures" via EEVA. One day I must do the above too!)
It's nice to see some of these less common objects though - And imaged so well.

Thanks.  I must have a look at that book - it looks quite interesting.

Alan