alan4908 Posted January 25, 2017 Share Posted January 25, 2017 My first go at the Silver Needle galaxy and I had quite low expectations given the small size of this object in my field of view. Anyway, I was quite pleased with the result, even getting a little galaxy colour and few details. For those that might be interested, I applied a variety of sharpening techniques to the galaxy: deconvolution (CCDstack), Unsharp mask, High Pass filter (PS) and HDRMultiscale Transform (Pixinsight). The Pixinsight route was particularly effective in revealing the details of the galaxy. The images below represent 8.5 hours integration time. Alan NGC4244 (uncropped) NGC4244 (cropped) LIGHTS: L:17; R:12; G:9: B: 13 x 600s; DARKS: 30; BIAS: 100; FLATS: 40 all at -20C. Link to comment Share on other sites More sharing options...
Knighty2112 Posted January 25, 2017 Share Posted January 25, 2017 Very nice image. Well done! Link to comment Share on other sites More sharing options...
michael.h.f.wilkinson Posted January 25, 2017 Share Posted January 25, 2017 Lovely shot! Link to comment Share on other sites More sharing options...
swag72 Posted January 25, 2017 Share Posted January 25, 2017 That's looking good Well done Link to comment Share on other sites More sharing options...
Nova2000 Posted January 25, 2017 Share Posted January 25, 2017 Awesome image! Like it. Link to comment Share on other sites More sharing options...
simmo39 Posted January 25, 2017 Share Posted January 25, 2017 lovely image. Link to comment Share on other sites More sharing options...
alan4908 Posted January 25, 2017 Author Share Posted January 25, 2017 3 hours ago, Knighty2112 said: Very nice image. Well done! 3 hours ago, michael.h.f.wilkinson said: Lovely shot! 2 hours ago, swag72 said: That's looking good Well done 2 hours ago, Nova2000 said: Awesome image! Like it. 12 minutes ago, simmo39 said: lovely image. Thanks for all comments guys, which are much appreciated ! Alan Link to comment Share on other sites More sharing options...
gnomus Posted January 25, 2017 Share Posted January 25, 2017 I like it too. I think I prefer the uncropped version - seeing this vast object in the starfield gives an impression pf how far away it is.... I think... Link to comment Share on other sites More sharing options...
alan4908 Posted January 25, 2017 Author Share Posted January 25, 2017 2 hours ago, gnomus said: like it too. I think I prefer the uncropped version - seeing this vast object in the starfield gives an impression pf how far away it is.... I think... Thanks Steve. Personally, I'm not sure which version I like best. I like the cropped version since it reveals the galaxy detail a little better but I also like the uncropped version since it gives a better perspective of the galaxy in relation to everything else..... maybe that is why I decided to post two versions. Alan Link to comment Share on other sites More sharing options...
gorann Posted January 26, 2017 Share Posted January 26, 2017 Nice detail in the galaxy! I assume you did this with your Evostar 80ED, so it must be a rather big galaxy. I never tried it but you put it on my list. Link to comment Share on other sites More sharing options...
alan4908 Posted January 26, 2017 Author Share Posted January 26, 2017 2 hours ago, gorann said: Nice detail in the galaxy! I assume you did this with your Evostar 80ED, so it must be a rather big galaxy. I never tried it but you put it on my list. Hi Gorann Thanks for the comment, yes I was surprised about the amount of detail revealed. The image was indeed taken with my Evostar 80ED, imaging at 1.4 seconds/pixel. The galaxy has a length of about 16 arc minutes, so from that perspective I guess it is quite large, although, of cause, it is also very "thin". Alan Link to comment Share on other sites More sharing options...
gorann Posted January 26, 2017 Share Posted January 26, 2017 11 hours ago, alan4908 said: Hi Gorann Thanks for the comment, yes I was surprised about the amount of detail revealed. The image was indeed taken with my Evostar 80ED, imaging at 1.4 seconds/pixel. The galaxy has a length of about 16 arc minutes, so from that perspective I guess it is quite large, although, of cause, it is also very "thin". Alan It just struck me that we are talking about a galaxy here so in any case it will be at least of galactic proportions.... Link to comment Share on other sites More sharing options...
PatrickGilliland Posted January 26, 2017 Share Posted January 26, 2017 Sharp image (yes I had to say it!) I like the first version the context works better for me, great detail for the scope as well. Paddy Link to comment Share on other sites More sharing options...
alan4908 Posted January 27, 2017 Author Share Posted January 27, 2017 9 hours ago, PatrickGilliland said: Sharp image (yes I had to say it!) I like the first version the context works better for me, great detail for the scope as well. Paddy Yes - very happy about the sharpness. The Pixinsight route HDR MultiscaleTransform, which I ran in Pixinsight and then brought into Photoshop for blending, really improved the sharpness of the image. I'm still not sure which version I prefer though ! Alan Link to comment Share on other sites More sharing options...
Barry-Wilson Posted January 27, 2017 Share Posted January 27, 2017 Like Gnomus, I really like the widefield and the context of deep space. Great image Alan. Link to comment Share on other sites More sharing options...
alan4908 Posted January 28, 2017 Author Share Posted January 28, 2017 11 hours ago, Barry-Wilson said: Like Gnomus, I really like the widefield and the context of deep space. Great image Alan. Thanks Barry. Interesting, it looks like most people prefer the wide field option. Alan Link to comment Share on other sites More sharing options...
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