Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_globular_clusters.thumb.jpg.b518052b915c2cf31f5f12e33ce0e9d2.jpg

ampleamp

Advanced Members
  • Content Count

    862
  • Joined

  • Last visited

  • Days Won

    1

ampleamp last won the day on November 16 2014

ampleamp had the most liked content!

Community Reputation

712 Excellent

7 Followers

About ampleamp

  • Rank
    Proto Star

Profile Information

  • Gender
    Not Telling
  • Location
    Shropshire
  1. ampleamp

    Four from Spain

    Thanks. I’m not on my normal calibrated machine so entirely possible. On this laptop I found that dropping the background lost much of the faint background signal but I take the point.
  2. ampleamp

    Four from Spain

    I am told home has fabulous skies right now, and I don't sat here, so here are four images taken over the last few months from ICA in Spain using @Petergoodhew 's TMB152/1200 and QSI6120. All these were chosen as they aren't imaged that much and partly because they gave different challenges and gave me a chance to try different techniques; and I quite like them ;-). I am interested in any c&c that anyone might have, too much processing, too little... Always keen to learn a bit more. Sh2-112 - 27 x 900" Ha and 12 each of 300" RGB. Is a really bright object in Ha that to my mind resembles the PacMan to an extent. This was taken in September and is about 5600LY away in Cepheus. Apparently this also responds well to O111 an d S11. NGC7538 - 32 x 1200" Ha, 33 x 1200" O111 and 27 x 1200" S11. Also located in Cepheus, but is approximately twice the distance of 2-112. I have tried to keep this toned down as all the channels came through very strongly. This was also taken in September. IC5076 - also known as vdB 137. 10 x 600" L, 23 each of 300" RGB. This reflection nebula has come across as being very faint so perhaps one to return to get more subs?. Certainly the ones i compared to online were either stacks ore subs or from much larger scopes, or both ;-). Located in Cygnus near the NAN. I think this is like a faint bird flying away (?). IC10 - 14 x 600" L, 14 x 300" R, 20 x 300" G, 20 x 300" B, 17 x 900" Ha. An irregular galaxy located in Cassiopeia approx 2.2MLY away. Diffuse and difficult would be my summation of this ;-). Taken back in July. Thanks for looking
  3. ampleamp

    Cocoon and Dust

    Have always liked this part of the sky and never tried it wide like this. Excellent as always Richard.
  4. ampleamp

    M31

    Since you use Pixinisght, it might be worthwhile trying the use of HDR Multiscale Transformation to open the core a touch. It is very easy to overdo it so care is needed to prevent some (IMO) terrible results. I find 8 layers generally works best for me but I experiment through the range every time. Also the dark structure enhance script might work well for you; I usually blur two layers but again, experiment on your own data. Just remembered about your magenta comment. It is always worthwhile trying this. Invert the image, run SCNR in green (often around 0.9) and then reinvert the image back to normal. Invertion turns the magenta into green which is then removed by scnr. The trick is what happens when you reinvert and how does everything look? If it works, happy days. If it doesn’t, there are various magenta strings for Pixelmath to try.
  5. ampleamp

    Nelly HOO

    Well framed and nice image. I am looking from a phone so not the best to judge colours, but is there quite a bit of green in the background? Did you try any deconvolution?
  6. ampleamp

    Andromeda M31

    Thank you everyone Most of the luminanace was from a Tak100DF and Atik16200 while the remainder Lum and all the rgb was from an FSQ85 and Atik383. I used reducers in both systems. I did try and fiddle around with saturation but kept coming back to this version as the stars started to suffer.
  7. ampleamp

    Andromeda M31

    Being one of the most photographed objects in the sky I don't even pretend to offer anything new barring this is my second go at this galaxy as it was my first ever DSO attempt. I have deliberately kept this as LRGB and tried to maintain the dusty nature of the galaxy, and i wasn't inclined to turn my cameras around hence the acute angle; if i had been braver i would have rotated to the corners. L - 37x600s + 39x900s; RGB - each 18x600s, taken with my multi widefield setup on 12/13th and 15th September when we got two fantastically clear nights followed early morning with driving rain; i was too late the first morning and got rained out Thanks for looking.
  8. ampleamp

    Weinberger 1-10

    You completed . I think you have a done a great job on that outer shell - a fainter aspect of a faint object! - and i am intrigued to see the LRGB as I haven't touched that yet. Excellent work
  9. @Barry-Wilson posted an excellent view and description of an area in Cygnus - - which contained an elusive Planetary Nebula called PK 086+05.1 (or We 1-10). In some communication with @Petergoodhew on Astrobin, Barry suggested we turn our 152/1200 on this PN. Well we did and this is my version of this very faint object. This image is a combination of subs from Shropshire (my 152/1200 and SX H694) and remotely from ICA in Spain (Pete's 152/1200 and QSI6120). Peter will post his version but i have used 21.5 hours Ha (1 bin) and 22 hours O111(2 bin). The Spanish data also includes LRGB in addition and i intend to combine that data into this but have run out of computer time for a couple of weeks. Amazingly, there is a lot more Shropshire data than Spanish in this version with nearly all the O111 and half the Ha coming from home. My other project these last couple of weeks has been a wider view of Sh2-129, The Flying Bat Nebula and within this i decided to try for OU4, or The Squid Nebula. Initially this was going to be a conventional HaRGB but this ended up a serious challenge as 2x2 O111 frames of 20 minutes barely showed a thing. In the end i used 19.25 hours of Ha (900" frames) and 35.5 hours of O111 (900" and 1200" frames), all frames from Shropshire. I have the rgb but haven't used it here yet. I can understand why this was undiscovered until 7 years ago; a seriously faint object I have added the inverse of the O111 data for interest (edit - this is the integration stack!) As always I am looking for any critique and suggestions as to how to improve processing. Thanks for looking
  10. ampleamp

    New Pixinsight tutorials

    Thanks Alan, that RGB "blip" removal technique is highly worthwhile add - ahem, and the one on DBE, I thought i understood that aspect....
  11. ampleamp

    Squid in O111

    It’s always @ollypenrice‘s fault
  12. ampleamp

    Squid in O111

    That is an excellent result. I know just how determined you will have been as@Petergoodhew and I are currently acquiring data on this (and the bat) from ICA in Spain and I for one am increasingly alarmed that 1800s frames at 2x2 barely show a smudge, never mind any structure. This seems to be an inordinately tricky target and it’s no wonder it remained undiscovered until recently. Super result.
  13. ampleamp

    IC1396

    Nice and understated. Which method did you use to reduce magenta? I go for simple and run with - (1) invert image (2) SCNR/HLVG (3) reinvert image It works most of the time
  14. ampleamp

    Bubble HaRgb

    Lovely framing and good subtle colours; i like this
  15. Thanks once again for the comments. Much appreciated. @gorann It is no substitute for astro darkness but I live on the edge of an army base which does give me a lot less light pollution than some others here. I pushed the times to the limit and had some nasty gradients to deal with but it is getting darker by the night now, much to Mrs ampleamp’s disgust .
×

Important Information

By using this site, you agree to our Terms of Use.