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  2. By the way, NGC 4440 was the pretty barred spiral galaxy I was referring to earlier....you will be mine one day!
  3. Hi Rob, and thanks for the reply. The process you describe is what i have done. I installed synscan goto upgrade kit a week ago ish, and when i do the 2-star align, is when the problems happen. The first star it goes to is pretty close, but needs small adjustments to center it. Ive chosen Vega then in east. Then when i goto the next star left again. Dont remember the name. The scope then goes haywire and points down in the ground almost. Guessing 30degrees off or something. Soo i figured i did something wrong with the alignment process. Thats why i started with all these videos and did, as you describe, overthink it. But now i dont know what is the problem. I can also mention that the scope bumps in the tripod legs sometimes when the synscan goes to a position. I look out for this and stop it but. Is there a way to programthe mount to go another way or something to avoid this? What is sharpcap pro?
  4. My my Rodd, that's one of the best M82's i've seen mate. Stupidly good.
  5. Hi Yeah I did use a cls-ccd but that's what caused the red halos around the brighter stars. I've since swapped back to my full spectrum 1100d with another cls ccd fitted. I read somewhere that the haloes problem is associated with certain older cls ccd filters. Hoping the second one might be better and will try again whenever I might get some clear skies.... Louise
  6. This is what I've found, I generally get 0.5-1 pixels drift when imaging unguided. It probably helps that I use a ball-head mount, so the camera is not aligned along RA and DEC lines. The only time I've had problems with banding is when I've used very short focal length lenses (35mm or less).
  7. Thank you! I really wanted to bring out the blues more but the data was not cooperating...in any case it's a nice data set to come back and add to. The background is a mottled black too - I actually think that is the beginnings of IFN (integrated flux nebula), but the integration time was too low and the light pollution too high to get close to bringing that out as pretty dust.
  8. Thanks Michael - If I read you correctly, am I to understand that the ioptron mount head might fit on top of the SW extension tube? If so, I currently have a skywatcher tripod with an extension tube fitted and that would solve the problem? I have asked the question to FLO as well, lets see what they say? Steve
  9. Thank you very much! Something to devour this weekend!
  10. Sounds good! Good luck with your observatory. Do post some progress pics as you go on.
  11. Try also to use a Filter, you then can expose longer and gather more data" photons " with a filter like CLS Filter.. Else, very nice results, and encouraging to make more of them.. Cheers Martin
  12. Hi Olly Noise reduction mostly, I'm getting a little bit of colour mottle in processing - nothing major at all but thought if I'd be able to increase the quality slightly I wouldn't mind losing some field of view since I'm using a 135mm lens. I'm using a polemaster for PA, I've cycled through subs and noticed the stars drift back and forth along the RA between images, periodic error I'm guessing? Probably not much more than a star width or two though. While I was searching the forum I found posts stating around a 15 pixel dither while using a dslr for the best effect? I suppose it's one of those trial and error things and finding what works best for you and your equipment! Shame I couldn't do it automatically with the Star Adventurer but while I'm at dark skies I'll be with the mount anyway! Mark
  13. Thank you for your kind words, I’m really pleased with this so far and it amazes me how much detail can be pulled out of the data since the histogram was so far to the left it was unbelievable. I’m struggling to accept that all the data is contained within the left quadrant of the histogram as it goes against all my previous photographic experience (expose to the right). At lease noise is better under control in these subs over higher gain and longer exposure times with a more centralised data histogram. Yes, my task for this evening is to capture the DARKS, FLATS & BIAS subs. Being the TEC version of the camera I shouldn’t have any difficulty in capturing these. I don’t know how people capture their DARKS at the time of shooting their LIGHTS. By the time my LIGHTS were finished I was ready for bed with work the next day. Obviously the camera is still on the telescope for the FLATS. I’ll post an updated ‘final’ image this evening.
  14. And did I understand it correctly, 35mm extension tube is needed for DSLR even if FF is used?
  15. What kind of star trails did you get though please? Did you get any seagull shapes?
  16. Hi Rick Thanks for your response Yeah the lens really deserves a medium format dslr or, better still, a full frame cooled astro cam, neither of which I can afford. APS-C will have to do! At the same time, at F4, it would be a great lens for EAA. I don't think there is much demand for long vintage medium format lenses as they are too heavy for the handheld market. But they seem great for astro! Louise
  17. Thanks for you input @Ricochet. It appeared that the secondary was not perfect so making the star elongated. I was aware of the offset but it was the actual secondary mirrors position using the cheshire although this was make easier using my sight cap only. I eventually stripped it back and took my time. To make things easier I connected my handset to the mount to ensure the star was central and things really do look much better. I tried to run a full test last night but after rebooting 6 times and it being 1am before platesolve started to work I gave up without a single frame. Looking at the platesolve images things are looking okay.
  18. Great picture. Very difficult to tease out the colour on this subject, there is not a lot there but you've done it great. For sure, my next camera will be a CMOS.
  19. Yep, that's the one in my shot John, I think!
  20. I have had the 10x50 variant for a few years. Excellent performance for the money. Yes I paid full price. Double todays offer.
  21. Here is a link to the video. This is good if you wish to explore the theory a bit further.
  22. I have just been reading through some targets you sent me in Canes Venatici and lo and behold you done a report. I keep going back to this constellation for M51 to see if I can get a glimpse through my scopes.(No luck yet) I see that 8" is performing brilliant again. Rain here massive thunderstorm about 6pm then sun come out then back to thick cloud and rain.
  23. Absolutely. I'm just trying to get my head around what sort of trails could occur if there's no tracking in DEC and the only possible errors are polar alignment and RA periodic error. James
  24. I rechecked PA with the camera on, Polaris was still within the ring which shows the tripod hadn't shifted. It was just a rough polar alignment though, straight trails wouldn't have concerned me. I doubt my polar alignment was good enough for 5 minutes at 135mm pointing south, but the longer exposure makes it easier to see any misbehaviour from the mount.
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