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  2. Even a 9x50 finder will show spots. There are filters made to fit finders. I’ve used one as a quick look scope to see if it’s worth getting something bigger out. There is a very usefull app called Solar Monitor Pro which I use on my iPad http://www.solarmonitor-pro.com/ipad/ Or the simpler iPhone / iPad version https://www.solarmonitor-app.com/
  3. I have only the single stack. Interesting you have to get such a high pressure, I've only ever found one other to give a reading and they said around 17-18 for a sweet spot. I've been upto 23psi without seeing any difference - so fingers crossed and it is down to this mucky green filter. Not looking forward to changing it, the process has been described as simple/straightforward with clear instructions. :D
  4. I turned mine through 90° putting the fine focus knob on top where it's easy to get to.
  5. We have, in the past, briefly considered a society Observatory, one member even looked at a possible plot, the eventual cost of which would have taken several years membership fees. Needless to say, we don't have one. Most considerations have already been covered - security, power, water, insurance. Also consider access/parking, can be problematic just for members but more so when expanding to outreach. Apart from the physical aspects of the build you will also have to manage access to the Observatory. The members will have paid for it so should have access to it, but who has the keys? Must an authorised member be on site to supervise? Will set up be for visual only or will imaging be allowed? If the latter do you allow members to bring own cameras to attach or does the society provide. Having spent many thousands on the build then it should be used, ideally, on every clear night which means that an authorised member must be also available. None of this is insurmountable, but will need a dedicated team to manage the observatory. Rob
  6. Think the tripod was reasonably stable and I stayed well away from it for the longer exposure. I don't remember much wind that night but I could probably find some weather station data to confirm. I've used 135mm lenses on three other mounts before and while I've had streaks due to balance problems or misalignment I haven't had a flock of seagulls before.
  7. Sorry I meant your stacked image ie fits file , and as above screen shot your final image
  8. Any telescope that will give you sufficient magnification will be suitable. I've used my Meade refractor, suitably filtered using a solar filter, to view sunspots. Unfortunately, the sun is very quiet at the moment with little activity. https://sohowww.nascom.nasa.gov/ https://sohowww.nascom.nasa.gov/sunspots/
  9. Looks good to me too. As you say, no darks applied . When you do, as long as you have DARKS at the same temperature and gain then Amp Glow should not be a problem. Not bad image for starters. Well done.
  10. well to me, I'd say the stars in the classic version all seem to be a pale shade of purple ? I'm a sucker for sciencey things so would always go for the PCC but it does make your galaxy look a little red. Did you apply Background Neutralisation after PCC by the way ?
  11. ASTAP works under Windows/Linux and does stacking and platesolving even has a Planetarium option called HNSKY http://www.hnsky.org/software.htm - I dont use it so cant comment on how good/easy it is but Hans,the author I beleive, is a registered SGL user. But there is no problem doing post processing on any other OS that works for you
  12. Looks like a pretty darn good image of M101 to me!
  13. Sorry for being blunt but making a statement "However sill doesn't work" does not help a lot to find the problem - How about some info - ASPS Log file for example and or screen print of any errors Plus post the image you are trying to solve , Scope and Camera details so we may try and Platesolve the image
  14. Yes, it's certainly feasible, and stacking may not be required. Here's a few example 2-minute exposures taken with a 135mm lens at f3.5. In the dark they show up much better on the camera screen and its possible to zoom in to see quite a bit of detail. My Samyang f2 lens would be even better. The above is after a very quick process. Results will be greatly improved by shooting from a dark site, but an Ha filter is an option for light-polluted areas.
  15. I would say that around 200 mm focal length gets you reasonable details with the advantage of capturing interesting foreground/clouds too. This cropped image was shot with my Canon 70-200 f/4. Alan P.S. Another advantage for me is that Lunar shots like the one above can be done hand held..
  16. Yes is the simple answer I and many others have been doing VA or whatever you want to call it today with DSLR For example using Astrotoaster you have "Live" stack and view EAA images - remember EAA is not all about getting a photographers level image - IMO. Using Astrotoaster you are able to get a live view on a local or remote PC within a couple of frames depending on the object. In effect its like doing DSS and looking at the finished image after post processing - only in "near Real Time". All I do is pre create "Darks" and a Master Dark select the folder where the images will be placed by ,in my case,APT and let Astrotoaster do its thing - while watching and "tinkering" with adjustments to get something I am satisfied with - quite a simple process. The image appears within 2 or 3 frames and just gets better as the images are stacked. Attached is a screen print of an actual image shown - with text added later of course
  17. 2 pane mosaic, Skywatcher Explorer 150P on EQ3-2. Sony a6300 prime focus via X2 Barlow. ISO1600 1/80th second exposure. 10/04/2019 20:38- 20:39. Stitched in MSICE
  18. Hello there and welcome
  19. Hmmm, my own thoughts: 1) Does it have a centre? Universes are not like most other things in that they don't have to have centres. The surface of a sphere has no centre. (The sphere does, but not its surface. No point on the surface is more 'central' than any other.) 2) If there are objects beyond it, it isn't the universe. (To be more precise, if there are objects beyond it which share its system of dimensions then it isn't the universe. If 'beyond' means outside its system of dimensions then 'rotate' has no meaning since 'rotation' must be specific to one set of dimensions.) 3) If it is the universe and there is nothing beyond it (as defined above) then relative to what would it be rotating? Can something rotate relative to nothing? Imagine a universe containing nothing but a single particle. Can it move? Can it rotate? For Newton it could move relative to a space he considered to be absolute but in general relativity there is no absolute space. This brings us to Mach's principle. Go there if you dare! https://en.wikipedia.org/wiki/Mach's_principle ly
  20. Today
  21. Thanks for all your likes and positive comments everybody. Much appreciated. Thanks. Please do try it. I have to say, I find it so useful in helping me remember what an area really looks like; helping me to recognise it again if I see it in a picture anywhere. Thanks for you comments. Thanks Des. That's very kind of you. Thank you.
  22. Thanks for a nice review. As per balance and the locking screw, - how stiff is the drawtube without locking? And won't you lose camera at some point? Why not to turn OTA in the rings 180 degrees?
  23. Yes agreed. It's very neat and well designed.
  24. You could save a screen grab In DSS set it to autosave a fits file, no rgb alignment and no hot pixel removal.
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