Jump to content

Narrowband

Mandy D

Members
  • Posts

    1,275
  • Joined

  • Last visited

  • Days Won

    2

Everything posted by Mandy D

  1. @Cornelius Varley Oh, OK. I couldn't see that. Then, it must be so.
  2. Not at 7 p.m. in the UK. I have 7:31 for my location in the middle of the UK, today. I think we need the OP's location, first.
  3. @Xilman Ahh, good to see correct use of SI units for the critical dimensions of your telescopes. Keep up the good work.
  4. I've not heard that term in years! I really must read the books, again.
  5. My rings are threaded on both sides, so I plan to add a second dovetail, then clamp things to that with a Vixen clamp. Alternatively, get a piece of aluminium bar and drill to suit.
  6. @PatrickO In addition to @vlaiv's comment on tracking, I would add that it can be advantageous to not track or to allow the Moon to drift through the FOV. If you have any dirt or defects on the sensor, these will automatically and magically disappear when you stack your images, since the stacking software will not see them as features to be stacked. I have a dark mark on the sensor of my camera and it never causes a problem if I am stacking.
  7. Part of the southern hemisphere of the Moon near the terminator at 81% waxing phase. This is a stack of 18 images at 2.4 m focal length with the Nikon D800. Processing in AS!3 and GIMP.
  8. Nice captures. I was having similar problems tonight with the clouds and lost the northern regions completely, but did OK in the south.
  9. Daft question: but, have you checked that the locking screw on the sie of the focuser is not too tight?
  10. Reprocessed version of Earthshine. Gaussian blur applied to mask the noise.
  11. @Mr Spock Thanks! I can't wait to get some images with the Herschel wedge. I've had a look visually, but cannot get focus with a DSLR, so I need to set up the ASI 178MM.
  12. Wow! I managed to see the Sun today and for long enough to grab sufficient images to make a half-decent stack. Skywatcher 200P Thousand Oaks solar filter Nikon D800 f/5.9, 1/500s, ISO-100 Processed in AS!3 and GIMP
  13. Slightly noisy image of the night side of the Moon bathed in earthshine. No stacking done, as I wanted the clouds to feature. Skywatcher 200P Nikon D800 f/5.9, ½s, ISO-1600 Processed in GIMP
  14. @Richard N The name of this forum has always irked me, so I agree with you. Whenever engaging with the public, I never use such terms and stick to astronomy, astronomer, etc. I have been referred to as an astrologer on numerous occasions and even asked if I would cast someone's horoscope. I think I would have based it around the seventh planet, if I'd been bothered to humour them.
  15. @pie_in_the_sky I use this: https://uk.benroeu.com/benro-gd3wh-3-way-geared-head/ You can set it to any angle and it locks. Micro-adjustment is easy and there is a fast adjustment, too. Shop around as they are much cheaper from dealers than direct.
  16. I suppose if it were a truss tube, it would be relatively easy! 🤣
  17. @Carbon Brush I'm glad it's not just me that feels this way. There is, of course, the NEC in Birmingham, which would be better for you and myself along with a host of other members of this forum.
  18. Well, I think that confirms it, nicely. Well done.
  19. I prefer the snow in the second image, but the sky looks ever so slightly over-cooked, but not to the point of ruining the image. Both are excellent. Well done!
  20. Nice! I like how you get crater details near the terminator when the Moon is at 99% and it still looks full.
  21. The various rotations and mirror views of the different scopes, coupled with the rotation of the sky when not using an equatorial mount really adds to the complications. When imaging, I rarely bother to rotate the image to match it's standard orientation and prefer to leave it as seen. It's all about artistic interpretation for me, unless there is good reason to correctly orient my imges. Have you got a copy of Turn Left at Orion? It shows drawings of the various views of common objects in the different types of telescopes. It may help more than Stellarium.
  22. @GasGiant I took these snapshots of M42 back in November. I've cropped and rotated the first one and left the colours alone, so it should look something like what you saw. The second image is better exposed and shows more of the detail and a wider field, without being rotated. I think your drawing pretty much matches what is in my first image. It is a beautiful nebula that is worth spending some time on. Congratulations on finding it and producing an accurate sketch.
  23. What? You get eyepieces and a diagonal thrown in for 'free'? 😁 I'm surprised, on a scope of this calibre, that you get any of that. My iOptron RC6 had none of that and not even a finder of any type. I actually prefer that they do not supply me with these cheap accessories, so I can put the money saved towards quality ones. I understand supplying the complete kit when it is a beginner scope, but this really isn't. Hopefully, you will enjoy it.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.