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umbilic

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About umbilic

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    Nebula

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    lyme regis

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  1. I am fan of the AstraImage image enhancement software package for processing my lunar images, but I am plaugued with its producing rows of artefacts along the top ~15% of my images. I am not sure what feature causes them (If I knew, I wouldn't use the feature!) My workschedule is usually:- denoise, deconvolution, multiscale sharpen, multiscale contrast and then perhaps very small scale wavelet sharpen or microcontrast The artefacts may come from multiscale contrast (a bit buggy) or wavelet sharpen but I may be mereley enhacing artefacts generated earlier Anyy thoughts out there ?
  2. I have tried Antares Barlows (2x and 1.5x) for lunar photography using an IR pass filter a ZWO 290mm and a Celestron11 CPC but have been disappointed by the extra apparantly scattered light they produce Is it just me ? or is this due to say different transmissabilty of IR by the glass or something else - internal scattering ?
  3. thanks for your reply - I already have a celestron focal reducer - but I use a Moonlight electric focuser and I see 2 problems 1) I believe the celestron reducer is designed to fit the 'visual back' of a C8.If I does fit the C11 (which has a different optical back) I presumably could not use the Moonlight focuser. 2) I want something like the Canon extender which fits between the acmera and the telescope so |I can use it wit hout dismantling the focuser' put simply is there a focal reducer which fill go between the Canon camera and the telescope - just as my extender will ?
  4. I have a canon EOS5d III camera which I use sucessfully with a celestron 8 - the image fits beauitfully. I would like to use it with my celestron C11 CPC but the image is too large - because of the longer focal length. In the past I have used series focal extenders (2x 2x+1.4x) to get good images with a canon 400mm f2.8 lens, and have used a 1.4x extender between the camera and a T adapter with a celestron C6. Having had success with focal extenders, I have been trying to find a focal REDUCER to put between the camera and T adapter to reduce the image scale - but I cannot find an appropriate d
  5. I am trying to use a ZWOASI224MC colour camera with Sharpcap2.1. It selects the RCG8 colour space as default but only shows a black and white image on my computer screen ! What am I doing wrong ?
  6. does anyone know the weight capacity of a celestron nexstar evo mount (8-inch model) ?
  7. I am disppointed in the low dynamic r ange of my camersa in lunar photography - try to get detail on the terminator and burn out the rest of the field. This applies both to CCD and DSLR. I am aware of the DSLR options - which are disappointing but is there a CCD camera suitable for lunar work with a decent dynamic range ? Lucky imaging and stacking with poor seeing don't lend themselves to the usual stacking techniques. Any suggestions ?
  8. thanks once again - I had downloaded an out of date synscan manual - now have version 4 WITH daytime align - no more confusion !
  9. I want to observe the moon with a Skywatcher mount/Syncscan handset and your algorithm sounds close to what I want. Questions 0) what is your software version ? 1) point the mount north ? Is this just to level the mount N/S ? 2) level again - is this in the E/W direction ? What is PST - Power Supply Termninal ? 5) ..sun->moon... ? ? ...sun->moon... centre of eyepiece ? What about planets ? thanks in advance ...
  10. I have just purchased a Skywatcher AZ/EQ 5 GT mount to carry a C8 SCT OTA or a Skywatcher 127mm Mak to use in alt/az mode for lunar work. Can anyone suggest a method of setting up the mount for lunar tracking in alt/az mode without star alignment ? The handset instruction manual I just downloaded makes no mention of alignment possibilities other than 1 or 2 star methods. I have been using celestron kit with a solar system align option where you simply enter observatory position, time and date etc with lunar rate tracking, centre the moon in the eyepiece, press align and off you go ...
  11. contrary to my last post - more questions. I purchased the mount from FLO yesterday and am looking forwards to using it. Prior to its arrival I have been reading on-line manuals and am concerned that the Skyscan manual I have located (AZ goto telescope instruction manual) does not mention 'daylight observation' under which you say that lunar alignment is mentioned. Is the manual out of date or can I expect the feature to be present in my new Skyscan hanset ?
  12. A final question concerning the mount - how does the head fit onto the tripod ? is there a single bolt ? ps I also use the ZWO 290mm - with an IR pass filter - nice camera !
  13. thanks again. Is the mount in your photo a standard one ? or is it on a non-standard tripod - the commercial photos I have seen have a steel tripod. (Do you happen to know its height? As a separate matter, what is the telescope ? A 6 inch Mak ? is the carry handle an extra ?
  14. thank you for the information. I can't use equatorial mounts because I can only observe out of a flat window and theres no room. I can't do deep sky because I am in a light polluted town and I also have AMD eye problems - no central vision. I can only use a CCD image on a computer screen. I used to be a fanatical deep sky observer many years ago (mad on galaxy clusters). I'm glad to hear that the mount now has a solar system align option - is it standard or do you have to update the supplied software ?
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