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_lunar_landings.thumb.jpg.b50378d0845690d8a03305a49923eb40.jpg

Galaxyfaraway

Members
  • Content Count

    252
  • Joined

  • Last visited

Community Reputation

49 Excellent

4 Followers

About Galaxyfaraway

  • Rank
    Star Forming

Contact Methods

  • Website URL
    http://www.yevgenysudbin.com/artist.php?view=gallery&albumid=3081

Profile Information

  • Gender
    Male
  • Interests
    Photography, Astrophotography, Music, Travel
  • Location
    Greater London
  1. Wow, I am actually right next to you! (Stanmore). But your skies are probably dark skies compared to mine ? I do see some detail in Luminance that I don't see in the RGB, I think, or maybe it's my imagination, it's just the gradients are a pain...(I will attach luminance and red channel again, just for reference). I will download all these tools first and maybe try to process one more time. Very nice image with nice star colours! It's interesting with the background: I always imagine it being quite black in space, but apparently it's not as black as one thinks ?
  2. Thanks, yes the feeling I got from watching a couple of examples is that AFP looks a bit more powerful/reliable somehow.
  3. Could be stacking (do you use DSS?) there is one setting that used to give me doughnut-like stars, I forgot what it was...Could also be partly focus or star alignment (when you add luminance, or if you do different binning). Hopefully someone more experienced will be able to help.
  4. Very nice image! Different star sizes could also be focus? I noticed that with my 8" SCT, I have to readjust focus about half way through the night, otherwise stars beginning to look bigger and bigger...
  5. Has anyone compared the two? I am not sure which works better but Astroflat Pro looks pretty good/useable. https://www.prodigitalsoftware.com/AstroFlatPro1Help.html http://www.rc-astro.com/resources/GradientXTerminator/purchase.php Also anyone uses Astronomy Tools Action Set on the lates version of PS by chance? (version 20, mac). Website says it works with all modern versions of PS but I don't know whether the website might be out of date? https://www.prodigitalsoftware.com/AstronomyToolsActions.html Want to make sure to get the right thing. Thanks.
  6. Oh I am sure Pixinsight is brilliant! It's just me who is too stupid to learn...Once I get better with PS and actually feel more confident that something can be done with the data at all, I will dive into Pixinsight. Probably a stupid question but what is roughly the workflow process (after LRGBs are stacked), tutorials seem to vary greatly. Is there one that is particularly close to what you do? When the 4 channels go to PS, should they be stretched individually first and background adjusted, then combined into RGB, then adding luminance? And should most of the adjustments be done on RGB layer, or together with Lum? I read somewhere you mentioned to add luminance gradually, so the adjustments are all done to the RGB layer or with Luminance added (and image flattened). The beginning of processing is kind of puzzling for me, then I see some light on the horizon, especially if the Astronomy Action Tools can help... Thanks again.
  7. PS: Does the Astronomy Actions Tools still work with the current version of PS CC (I think I have version 20) for mac? And do their gradient removal tools work well? Or is the gradient xterminator tool still better? The astronomy action tools seems like the thing to have for lazy post-processors like myself...Do people still use them?
  8. Many thanks for the reply! I will check out the gradient tools. I simply used the gradient tool and radial filter (which applies a kind of vignetting around the galaxy) in Lightroom, wherever there was a gradient but it made everything too black. I presume Pixinsight's tool works in a completely different way. This software scares me, as it looks completely gibberish to me on the first glance... Stars: how does one get more (any!) colour in the stars? (and avoid the massive red and blue halos?). When I put RGB together, there is immediately too much red colour (picture attached) and any tutorials I followed seem to not have such imbalance at the starting point. The stars are white and the only colour is only in the halos... Binning: 1x1 somehow looks smoother than 2x2. But I understand it might be an illusion. And lastly: any views on whether to RGB or LRGB for broadband imaging in LP? I read contradictory things about this.
  9. Here are the images out of DSS, I only adjusted levels a bit (blacks etc) in Lightroom to make them a bit more 'even' in terms of signal and brightness etc and also tried to remove gradients in the Luminance. Then I transferred the files into PS before assembling into RGB, combining with Luminance and colour correcting a bit (using levels for individual colour channels). I then went back to LR (I feel more comfortable in LR than in PS where I am still learning the ropes) where I twisted all the knobs possible to try and make it look like a galaxy... So luminance was 10 mins at 1x1 (about 20) and RGBs were 5 mins at 2x2 (about 15 of them). I realised that I might be oversampling? Resolution per pixel at bin 1x1 is 0.47" which is too low, no? 1. Luminance, 2. Red, 3. Green, 4. Blue PS: I have reattached them in full res tiffs, in case it's more useful (wow, it's a generous file size limit this site has..). 2019-04-01 12_48.57 L Autosave.tif 2019-04-01 12_50.08 R Autosave001.tif 2019-04-01 12_51.24 G Autosave002.tif 2019-04-01 12_52.42 B Autosave003.tif
  10. This is maybe my 3rd attempt at a galaxy and I am trying to figure out the best way of doing it since I live in a red zone of London suburbs. I took this over 2 nights (well, 1.5 really, as my guiding wasn't working and plate solver wouldn't comply after meridian flip...) with my 8" EdgeHD SCT with 0.7x reducer and Atik 490X. Around 20 Luminance subs at 10 mins each (1x1) and around 15 RGB subs at 5 mins each, but binned 2x2. I use Astrodon filters but also have an LP filter permanently in my image train. Question: should I only use RGB and create a synthetic L channel, given LP, or continue trying with the actual luminance? Gradients are horrible with luminance but RGB doesn't have as much detail (only red filter seems to be more sensitive). My stars are all over the place (colours pop out everywhere, in the wrong way), how can I control this better? Also, as I wrote, the red filter seems to have much more detail than the rest and when I add all the channels into PS, the red colour just overpowers everything (and in general, how can I keep the star colours as they are and not have the red and blue go crazy - I am not sure the name for it, but it looks like chromatic aberration on steroids). Any other general tips would be great... Thank in advance. GFA PS: I cheated with the core: just changed the temperature to make it look a bit more glowy; for some reason, I barely had any yellow colour from the data...I will post stacked images, if of interest.
  11. I would like to save time and install a pier but don't think I have space for a shed /dome installation around it. Does anybody use piers on their own (with the mount) and does it help / save you time setting up each night? Also what would be a good recommendation for the actual pier? There is the Altair Skyshed 8" and the Primaluce Lab C82 I came across that may fit my AZ-EQ6 mount. (I know it's not important but I would prefer a white pier as it will be less obvious/blend in better). There seem to be different installation options as well: https://www.altairastro.com/public/pier/Altair_Astro_8_Adjustable_Steel_Pier_Installation_Instructions_2014.pdf Which is the better / more secure? I currently have builders in and they can pretty much do anything. I can't find info on exact specifications for concrete (70x70x70 was mentioned).
  12. Ah, I missed that section. Can this be moved there, or should I repost? Do you use it inside a shed?
  13. PS: Does anybody just use / have a pier (with the mount) without the shed? I don't think I have space to also build a shed but I would like to somehow save time (polar alignment / some set up etc) and just use some kind of weatherproof cover etc.
  14. Hi, I would like to get a pier built for my AZ-EQ6 Mount and add a shed around it, with a roll-off roof. How do I find the required specifications (for the base) and also perhaps any recommendations for the actual pier to hold the mount? Thanks!
  15. Many thanks. Bayer mask: is that not something to do with colour CCDs? Mine is mono. I will read up on bayer masks!
×
×
  • Create New...

Important Information

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