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.



Advanced Members
  • Content Count

  • Joined

  • Last visited

Community Reputation

130 Excellent

About don4l

  • Rank
    Star Forming

Profile Information

  • Gender
  • Location
  1. don4l

    Orion widefield

    That is one hell of an image. You must feel proud!
  2. I was wondering about this earlier. I decided that if the Ha filters could be used visually, then I would have heard about them for visual use. I'll look into the monoculars. Mind you, I have already got a list as long as my arm. That is a fantastic image, it gives me a good idea of what I am trying to image. If I had remembered it, then I would have realised that the Angelfish was bigger than my CdC showed. It also shows the huge difference in brightness between the Rosette and the Cone area.
  3. Thank you for those suggestions. It cleared for a while last night and I had a look at both Barnard 37 and the Angelfish. Part of B37 is discernable in my original images. It was less discernable last night, and I think that this is because of the moon. However, I will come back to it when the moon is gone again. This will be a great learning exercise for me. The Angelfish is fascinating. I would never have thought of attempting this, but I am really pleased that you suggested it. I only got two quick frames before the cloud rolled in, and my impression is that it isn't as faint as the Internet would have you believe. Hopefully, I'll have a proper go tonight - depending on how the moon affects things.
  4. That is an astonishing thought. What a magnificent sight the sky would be if our eyes were much more sensitive in the Ha spectrum.
  5. Yes. I used the "Prt sc" button to copy the CdC screen, and then pasted it into The Gimp, where it was cropped. I then opened my own image as a new layer and scaled/rotated it until the stars in both lined up. At this point I could have just left it as it was, but I used the G'MIC filters to blend the two layers. This was just an experiment to see what it looked like. As far as I can see, it has added a bit of background colour to my image to make the superimposition a bit less obvious. I often platesolve my images and put them into CdC's picture directory so that CdC automatically displays them. I haven't quite mastered this yet, but it is useful when coming back to the same area.
  6. No problem at all. I'll add another row when I get the chance. We might get a bit of clear weather tomorrow night. It would be interesting to see if it can be done with a bright moon so near!
  7. Thank you very much! The scope is an FSQ 106ED at F3.6 - (about 380mm FL). The camera is an STL 6303 (which has peak QE at about Ha emissions). The filter is a Chroma 3nm Ha filter, although I don't think that makes a huge difference with these type of images. Each frame is 5 x 120s exposures binned 2x2. They are then scaled down by 33%. So, I guess that the effective binning is the equivalent of about 6 x 6!
  8. Oh dear God! I can't believe that I did that. I've even saved the images in a folder called "Cave". Thank you. I've edited the title. The clear skies were not forecast, but it cleared a bit around 8 o'clock. Just after 9 it was crystal clear and I got imaging by 10. I had to go to work today so I had to finish at 01:00. My scope is outside at the moment - just in case!
  9. Another clear night!!! I've had another go at a mosaic. This time I went for the Rosette and Cave area. My mosaicing skill still need working on. I've tried to get APP installed, but it doesn't like my firewall (apparently). I couldn't get ICE to work in two dimensions. So I am carrying on with the Gimp. This mosaic consists of 6 panels. Each has 10 minutes of Ha data binned 2 x 2. I've also overlaid the image onto a screenshot from Cartes du Ciel. Clearly, I should have rotated the camera 15 degrees clockwise, but I didn't know what to expect. The Cave area is much dimmer than the Rosette, so I used DDP to brighten up the dimmer stuff.
  10. don4l


    That's lovely. You've captured M42 very nicely.
  11. Thank you! I haven't measured it, but it should be about 13 degrees by 8. If we get another clear night I'll add some more frames.
  12. Thank you all very much for the positive comments. It is great to get the encouragement.
  13. The biggest problem that you have when starting out in astrophotography is knowing what equipment to buy. When you buy a car you can have a test drive, so you have a good idea about what you are getting for your money. I would caution against buying anything until you really know what it is going to do for you. The only thing wrong with the images that you posted was that they were not processed as best as they could be. You don't need to spend anything at all to fix this. I hate to think about all the bits and pieces that I have only ever used a couple of times. If my wife knew, she would probably kill me. I even have an IDAS 2" light pollution filter that I cannot remember using at all!
  14. Did you see the individual subs as they were acquired? What did they look like?
  15. Sorry about that. I've added it now.

Important Information

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