alan4908 Posted September 23, 2020 Share Posted September 23, 2020 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 LIGHTS: L:28, R:13, G:14, B:17 x 600s, BIAS:100, DARKS:30, FLATS:40 all at -20C. 24 Link to comment Share on other sites More sharing options...
Adreneline Posted September 23, 2020 Share Posted September 23, 2020 Excellent! A very impressive image. Thanks for all the background info too. Adrian Link to comment Share on other sites More sharing options...
ultranova Posted September 23, 2020 Share Posted September 23, 2020 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 Link to comment Share on other sites More sharing options...
MarkAR Posted September 23, 2020 Share Posted September 23, 2020 Stunning image, beautifully processed. Link to comment Share on other sites More sharing options...
alan4908 Posted September 24, 2020 Author Share Posted September 24, 2020 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 21 hours ago, MarkAR said: Stunning image, beautifully processed. Thanks for the comment. Alan Link to comment Share on other sites More sharing options...
peter shah Posted September 24, 2020 Share Posted September 24, 2020 that is up close and personal....great FOV...love the detail you have in the reflection...great job Link to comment Share on other sites More sharing options...
Laurin Dave Posted September 24, 2020 Share Posted September 24, 2020 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 Link to comment Share on other sites More sharing options...
steppenwolf Posted September 24, 2020 Share Posted September 24, 2020 Lovely - some amazing dust as well as the reflection nebulosity Link to comment Share on other sites More sharing options...
gorann Posted September 24, 2020 Share Posted September 24, 2020 Outstanding image Alan! Amazing details. Really good advertisement for the Esprit 150! Link to comment Share on other sites More sharing options...
alan4908 Posted September 24, 2020 Author Share Posted September 24, 2020 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 . 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..... 1 Link to comment Share on other sites More sharing options...
Allinthehead Posted September 26, 2020 Share Posted September 26, 2020 Great image Alan, I can't recall seeing detail like that in this target. Link to comment Share on other sites More sharing options...
alan4908 Posted September 30, 2020 Author Share Posted September 30, 2020 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 comment Share on other sites More sharing options...
assouptro Posted September 30, 2020 Share Posted September 30, 2020 Gobsmacked! My hat is well and truly off to you sir!! Thanks for sharing your hard work and for the description, Bryan Link to comment Share on other sites More sharing options...
alan4908 Posted October 1, 2020 Author Share Posted October 1, 2020 17 hours ago, assouptro said: Gobsmacked! My hat is well and truly off to you sir!! Thanks for sharing your hard work and for the description, Bryan Thanks Bryan Link to comment Share on other sites More sharing options...
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