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.

Spongey

Members
  • Content Count

    56
  • Joined

  • Last visited

Community Reputation

113 Excellent

About Spongey

  • Rank
    Nebula

Profile Information

  • Location
    South UK
  1. No problem It's worth noting too that you can stretch the histogram of the DSS by clicking the 'pixel' button in the bottom right! This makes the faint stuff much easier to see, at the cost of blowing out some brighter objects. Cheers, Sponge
  2. Hi Gorann, A great way to find the designation of objects in Aladin is to click on the Simbad database at the top of the view as shown here: You can then draw a box around the region of interest and the software will list all the objects in the area. For example, highlighting the 'upper' dark nebulae of your image, as below, gives the following: and If you 'pin' the items of interest they will be highlighted in pink in the view. Note that the number of items displayed in the view, and therefore listed when drawing a ROI box is largely dependent on the zoom level, i.e. you may not find the designation you're looking for unless you are 'zoomed in' enough. You can also adjust the 'density' slider when selecting the Simbad 'plane' on the right hand side to show more objects without zooming in, but this can get cluttered quickly. Apologies if this is a bit messy, I'm sure there are ways to hide certain objects from the view / list such as stars etc. but I'm not 100% sure on how to do that... You can shift click items in the list to remove them though. Hope this helps Sponge
  3. Hi Dave, In the past I have had my astro shots printed (C-type print) on Fuji Flex paper, through https://www.theprintspace.co.uk/. They are very reasonably priced for this type of printing, and I tend to go to a local framing shop for framing so I can get it just how I want! As a heads up, you may wish to apply a slight additional stretch to the image before getting it printed, as Olly has commented on here: Cheers
  4. Fantastic images and a true dedication in imaging time... Personally a big fan of the SHO version, the detail in the structure is impeccable, whilst not overshadowing the softness of the general nebulosity. If these were mine they would be up on the wall!
  5. Can't wait to see the M33 data! An LRGB dataset of some of the interstellar dust in Taurus would be my suggestion!
  6. An amazing competition once again, thank you FLO! Big congratulations to x6gas and matt_baker, and to all of those who submitted images; it was fantastic seeing so many different interpretations of the same data. I (and I'm sure everyone else) am very much looking forward to the next data release!
  7. Spongey

    SH2-132

    Fantastic image as usual, and a nice capture of PN G101.5-00.6 in the bottom right too!
  8. Once again, incredible data to work with, thank you! This one was a little tricker to process in my opinion, and I ended up going for a HOO combination for my first attempt as it looks like a few others have too. Processed in PixInsight and finished up in Adobe Lightroom. Cheers
  9. Fantastic data once again, thank you! One interesting thing I've noticed while processing is what seems to be some kind of faint diffraction pattern around certain (bright) stars in Oiii. Any ideas what might cause this? It looks a little reminiscent of the ASI1600 microlensing pattern but I've not seen anything like this on a CCD before.
  10. That's great to know, thanks Paul! I'm not too concerned to be honest, especially considering that I've only had the mount out a few times so far so still getting to grips with it. I'll try a few different things like east-heavy balancing to see if that helps at all too! My PE curve as shipped with the mount is pretty smooth so should guide out just fine. From the two imaging sessions I've had so far I haven't had to throw out many subs at all due to bad tracking so that's a win in my book. Cheers
  11. Since receiving my scope and mount from FLO a couple of weeks ago, I've had a few opportunities to get out under the stars with everything and gain some experience with all the features of a GoTo mount for the first time. I have to say that in particular, finding and framing a target using platesolving is a huge time save compared to using a star tracker! I'm still trying to get the best results possible from my guiding, if anyone is interested I have another thread covering that in the mounts discussion section. This image represents my efforts from two initial nights of imaging, the first cut short by dew (my next upgrade will be dew tapes and a controller). My focus held relatively steady on both nights, slowly worsening (as expected) as the temperature dropped, so an autofocus solution is in the pipeline too! I was relatively ruthless with the data regarding which subs to keep, so the final stack represents just under 8 hours of data out of a total 12 captured. I performed a large dither after every frame to combat the DSLR noise profile, which appears to have worked well. I have to say I expected the Hα signal to come through a little stronger, but I'm not prepared to modify my camera just yet so I will have to live with it / shoot broadband targets instead. As always, any CC would be appreciated! Imaging scope: Esprit 100 with FF Imaging camera: Canon 6D (unmodified) Guide scope: 9x50 finder Guide camera: ZWO ASI224MC Mount: iOptron CEM40 (non-EC) Image details: 7 hours 42 minutes in 120s subs Processing: PixInsight and Adobe Lightroom Cheers
  12. Hi Paul, Thanks for your response! I used the program PHD2 log viewer to create the first graph, which, as you say, in theory excludes the dither commands. You can do this by right clicking on the graph. I found that even after the dither settle as reported by PHD2 the mount took a couple more seconds to resume guiding smoothly so I added a 5s delay in NINA before the next sub starts. You are correct that the RA worm period is 400 seconds on the CEM40, I suppose this spike would then correlate to a slight imperfection in my RA worm? Glad to hear the overall performance is as you would expect though, I am taking 2.5s guide exposures to attempt to not 'chase the seeing' with the mount. As stated I've only had the mount out a couple of times so perhaps performance is more limited by conditions than I necessarily expected and I'll see it improve when I have a better sample size to work with. Cheers
  13. Hi all! I received my new CEM 40 (non-EC) a couple of weeks ago and have now had a few chances to test it out under the stars. I spent a few hours on my first night messing around in PHD2 and running the guiding assistant etc. to try and get my guiding as good as possible, and for my current image scale, it is performing admirably! However, I am getting a large spike in my guiding at 400s (the worm period), and a slightly smaller one at 200s, as seen below. The spike at 120s is due to my sub length and the fact that I performed a large dither after every frame. There was minimal wind during the session and my polar alignment was decent (reported as <1' by PHD2 log viewer). Is there anything I can do to smooth out these spikes? I understand it's not huge and that my overall guiding throughout the night was pretty good, but when I upgrade my camera I will be needing <0.7" guiding which I am slightly above at the moment. Am I simply expecting too much from the mount? For reference I am currently shooting with an Esprit 100 and a Canon 6D, with a 9x50 finderguider and ASI224, so around a 7.5kg payload. I have also attached my log file from last night for anyone to have a look should you so wish, as well as my guiding assistant output from night 1. I appreciate any comments or suggestions Cheers PHD2_GuideLog_2020-09-14_205554.txt
  14. Honestly, I am shocked that I have won, but so proud of myself at the same time Having only started astrophotography seriously a couple of years ago I am honoured to have won this competition, especially against some of the incredible other entries! Congratulations to everyone who entered, and a huge thanks to FLO for organising this for our community!
  15. Hi Steve, Is there any particular reasoning behind this? The thread discussing Es Reid's checks seemed to make it clear that the Esprit optics very rarely need adjustment, and that this option was more for 'peace of mind' than anything else (although this thread shows that sometimes there is need for checking!). Cheers
×
×
  • Create New...

Important Information

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