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Pompey Monkey

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About Pompey Monkey

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    Sub Dwarf

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  • Gender
    Male
  • Interests
    Astronomy, cycling, science.
  • Location
    Hampshire, UK

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  1. I tried to use AutoPEC with my AZEQ6GT a few years back. It failed miserably, basically because there is no worm position information coming from the mount. The encoders only "tell" ASCOM where the telescope is pointing, not what's happening to the worm. You are on a hiding to nothing and, as other have said, the guiding is OK without the AutoPEC.
  2. Whoops! I got the camera mixed up. I was thinking of an ASI6200, and a set of 2" Chroma filters... On the other hand, I already have a set of 36mm Chroma nb filters.... hmmm
  3. It's a stunning image. I cannot say more than that about it! Now I just need to find £7k+ to buy the mono version of the camera and the required 2" filter to stick on the Tak that's sitting in the bedroom that's waiting for the Covid to be under control... I have no idea which will happen first (unless I put off the double glazing for another year)
  4. This is exactly what they do in La Palma, and the effect is a bit surreal: All the streetlights are shaded to direct the light down (by law), so if you are near, or in a village, it is quite possible to get dazzled when in line of sight to one. However, turn a corner into the shade and it's dark enough for you not to see where you are. The sky is absolutely incredible, so directing the light downwards actually really improves things.
  5. This looks like an excellent start. With all that thought and planning, it's bound to go wrong somewhere! (joke) The only thing I can see that may cause you issues is the mounting of the guide-scope and computer to the stand-off plate. This could cause you an issue with differential flexure between the guide and main OTAs, especially as you are imaging at a little over 1" per pixel. On the other hand, it might work just fine. If you do have this problem, maybe beef up that aluminium plate a bit. Double the thickness feels about right to me. Basically though, you look good to go
  6. What camera are you using? 60 (or 45) 60 second subs won't get you a lot of nebulosity at all with a DSLR. If you have poor data to start with, then you are already facing an uphill battle.
  7. That thing is really, really, faint. Good work.
  8. Spot-on, apart from the Read-noise. This is a constant for all exposures relating to the electronic process of converting the charges on the sensor into an output signal. This is also known as Bias. The noise component measured in electrons per pixel, per second, is the accumulated charge on the sensor (hence "per second") for each exposure. his is known as Dark current. Dark current is a lot lower in the newer CMOS cameras compared to CCD. There are other differences, but That is for someone more knowledgeable than me to answer!
  9. What @ollypenrice said: dithering will really help you with the noise.
  10. Did you restart PI after copying the files?
  11. There is always the azeq6 gt if you want to do visual and AP with the same mount. Skywatcher mounts are excellent value for money, easy to use, and well supported through ASCOM/EQMOD for AP.
  12. It was, just. A clear horizon to the NNE was needed, so i went up portsdown hill for a better view.
  13. Lovely picture and the best comet I've ever seen! I can see the same noctilucent clouds from Portchester (Hants) Too.
  14. It will be fine. Any dust that might manage to get on the sensors window can be corrected for with flats. If you want to clean it prior to fitting the CC, just use a puffer:
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