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Ibbo!

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Posts posted by Ibbo!

  1. 8 minutes ago, Buzzard75 said:

    I mainly do imaging as well. I certainly won't claim that the eVscope and tripod are the most stable either. They are stable enough to handle 5-10mph winds and capture exposures at a few seconds a piece. Anything stronger and it will drop frames here and there, but will still capture the occasional frame to add to the stack. I know that if I had my 12" dob out last night it would have been bouncing all over the place. There's a lot of flex in that system and it acts like a big sail. My EQ mount and wide field imaging rig are pretty solid and it probably would have been fine, but I know from experience I would still have had to throw away a good bit of the data. With as limited as my time is, even with a little bit of wind it's not worth it for me to waste imaging in those conditions.

    I am glad you are happy with it.

    I certainly would not be esp at £2600.

  2. 40 minutes ago, Buzzard75 said:

    I know 10 mph doesn't sound like a lot, but when you're fully exposed it's a lot stronger than you think it is and can induce a lot of vibration. If you're just doing visual observing, it's not so bad unless you're using something like a huge dob with a lot of flex in the system. If you're doing image stacking though, any wind stronger than a couple MPH and any vibration in the system is undesirable. What made these conditions particularly bad though is that the wind was variable and constantly changed directions. Fortunately, the software is smart enough to detect the vibration and just drop the frames. I know other live stacking programs, like SharpCap, have similar frame rejection, but I don't know how the algorithms compare.

    I am an imager (mainly) and I image in a lot worse than that from back yard and in open fields Ok  my main mount is pretty good but the smaller mount copes well.

    I have also done a lot of outreach and that kit has to stand up to quite a bit of abuse and in my opinion that tripod and mount is not up to the job unless it is fenced off.

    In fact I did an outreach last night and the "stars" were a couple of 10" Skywatcher dobs and a couple of well mounted large binos.

    The tall spindldy fracs did not fare well.

     

  3. 12 minutes ago, Davey-T said:

    Nice and quiet up there, it'd better get its act together next week when I'll be starting this years attempts 😂

    Dave

    Yep  tripod to max height and dust off the solar scope.

     

    I will get round to the proms disc as there was a bit going off and there is an AR just left of centre.

  4. 5 minutes ago, DaveS said:

    Thanks Steve, I'll have another look at the FITS. I did pull the black down a bit as I thought there was a bright halo around M33 that was a precessing artifact that I should get rid of, I may have pulled it down too far.

    I have a load of data on M33 from last year and I tried several attempts at processing it and the last one I made a right mess of the stars and never noticed till I posted it .

    I find it is easy to loose sight of the whole image while trying to pull out or contain a certain portion of the image.

     

    I must go back and do something with it.

  5. 58 minutes ago, Marvin Jenkins said:

    Wow that sure is an in-depth answer. I would give you sixty seconds under interrogation. I will look up IC 443 and see where it resides in the sky. Good luck capturing that S11 data, I hope you get to post a complete image that you are happy with soon.

    Marv

    I copied it from my Astrobin page  not realising it carried that much info  😃😃

    • Like 1
  6. 29 minutes ago, Marvin Jenkins said:

    I am unfamiliar with IC443, any further details would be much appreciated. Looks like you captured some amazing structure. What equipment are using?
     

    Marv

    Resolution: 1600x1261

    Dates:Jan. 15, 2020

    Frames:Astrodon 31mm 3nm HA: 7x1800" -20C bin 2x2

    Integration: 3.5 hours

    Avg. Moon age: 19.93 days

    Avg. Moon phase: 72.76%

    Bortle Dark-Sky Scale: 5.00

    Astrometry.net job: 3185131

    RA center: 6h 16' 55"

    DEC center: +22° 31' 26"

    Pixel scale: 2.625 arcsec/pixel

    Orientation: 357.725 degrees

    Field radius: 0.743

    Locations: home, nottingham, United Kingdom

    Data source: Backyard

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