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About Ouroboros

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    South Oxfordshire & North Cornwall Coast
  1. Off topic but does anyone know whether there is any possibility that ZWO will launch a mono version of their ZWO ASI071MC Pro colour canera?
  2. I sometimes wonder whether OSC versus mono is like comparing chalk and cheese. DSLR versus cooled OSC might be a better comparison. DSLRs have several good points. Readily available, fairly cheap, reliable, uncomplicated set up, stand alone (if required), live view for focusing/framing at the scope and give reasonable results for someone with limited opportunities for imaging. What's not to like? Well, it would be nicer if DSLRs were also cooled. OK cooled DSLRs are available, but it's a bit of a "DIY" solution, even if you buy one from a bloke in a shed. Sorry . So, those of us who enjoy one shot colour astrophotography using DSLRs might well consider the question of whether to buy a cooled OSC CCD/CMOS is the more interesing and relevant comparison than whether to go for mono.
  3. Ouroboros


    @tooth_dr is that with PixInsight? @TheMan that's a petty good image for Bortle Class 8/9. The colours are nice. Did you have to struggle to get the colour balance right against the colour cast provided by so much light pollution? That's been my problem when imaging under such conditions. I agree with the earlier comment that flats would help this image. Though of course it's recommended to take the flats at the time, you might just for the exercise try taking some flats even now and applying them. You might be lucky and it helps if dust bunnies haven't moved. Assuming you've disassembled your set up you'll have to put things back as close as possible to where they were when you took the data, including having the camera at focus. I've done this on occassion and been pleasantly surprised how well it works.
  4. That's a lucky (?) shot. Nice one.
  5. Ouroboros

    Skywatcher 200p Newtonian price lowered..

    I've got a finder scope with FL nearly as short as that ..... but I think you mean 800-1000mm?
  6. Ouroboros

    Correct Voltage Eq-6

    Thanks. That sounds like a proper physics reason. Good.
  7. Ouroboros

    Correct Voltage Eq-6

    I suppose it might help. I've just googled and found mention that it is for historic reasons in the automotive industry concerning the battery charging voltage.
  8. Ouroboros

    Correct Voltage Eq-6

    @Gerry Casa Christiana Might be worth checking your manual. My manual for the SW AZ-EQ6 says: Output Voltage: DC 11V (minimum) to DC 16V (maximum). Voltage not in this range might cause permanent damage to the motor controller or the hand controller. Output Current: 4A for power supply with 11V output voltage, 2.5A for power supply with 16V output voltage. Do not use an un-regulated AC-to-DC adapter. When choosing an AC adapter, it is recom- mended to use a switching power supply with 15V output voltage and at least 3A output current. If the power voltage is too low, the motor controller will stop the motors automatically.
  9. Ouroboros

    Correct Voltage Eq-6

    I power my AZ-EQ6 with 13.8V from a power supply and it's fine. This seems to be a standard voltage provided by many power supplies and I know that many people use them to power mounts. If you can choose 12V why not use it and see if the mount works OK? I know that when I used a battery supply that the mount started playing up if the voltage fell too far below 12V. Maybe some more experienced members can explain why 13.8V is a standard voltage. Is there a historic reason?
  10. Ouroboros

    Out with the bins.

    I always enjoy searching for and finding these two planets. Uranus at mag 5.7 is fairly easy to spot with my 15x50 bins even under the relatively light polluted skies of south Oxfordshire. Neptune is harder at mag 7.8. In fact with the moon about recently I have only really seen Neptune by averted vision. PS Having found them it's interesting to track them over the days and weeks as they slowly move against the background of stars.
  11. Ouroboros

    Uranus Opposes Sun - 2018 OCT 23-24

    I have been out this evening looking at these two planets with bins. Uranus was fairly easy to see. Neptune was a tad more difficult and I found only really visible through binoculars with averted vision.
  12. Ouroboros

    First moon - 300mm dslr

    Thanks for the link. I will take a look at it.
  13. Ouroboros

    First moon - 300mm dslr

    Nice contrast. Not easy on the well lit face of the Moon when so near full. You could lose some of the black surround maybe. Good to see someone still using a 450D! I'm still using mine despite it being about ten years old now. I don't tend to image the Moon that much, but occasionally just for fun. I only take single frames. What stacking software did you use? Did you try applying any sharpening? I find that can help considerably if aplied sparingly.
  14. It does. I find having a dedicated finder scope for guiding quite useful though because I don't have to focus the camera each time. But then if you buy another scope you'll probably get a finder scope with it anyway. One for finding, one for guiding.
  15. I have used one for years on my Skywatcher ED80 Pro (510mm focal length with reducer) and my 200mm Newtonian (1m focal length). I image for up to 300s, and could do longer. Both on an AZ-EQ6 mount. Guiding is pretty good with my ED80 and adequate with the Newtonian. I wouldn't want to use it with a scope of FL much longer than 1m. You didn't say what focal length scope you have or mount.

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