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Lukesms posted a topic in Imaging Challenge #5 - Solar & Solar Eclipse (Now Closed)Hi, First entry to SGL here, I took this in Vancouver BC where we got 88% coverage, this is 151 exposures taken on an HEQ5 through a Nikon d5200 iso 100 @ 1/20 shutter speed with a manual f/6.3 500mm catadioptic lense and a 2x telextender once every minute. All shot raw and processed through Nikon's software where I tweaked sharpness, levels and a bit of colour than normalized with PIPP, animated as a GIF and stepped down to 500 pixels x 500 pixels the full size gif is about 250MB! I also shot about 90GB of 4K video which I haven't even considered how to process yet...
I just tried to see the moving of this object. I made 20 frames with my Huawei P10 smartphone, with the monochrome camera. My star tracking is not so sharp, I have alt-az mount, I used only 10 sec expositions at ISO 1600. The shots was taken in every 10-12 minutes in this time intervall: 00:16-03:53am 2018. 08.16. Celestron Nexstar 8 SE, 25mm plössl eyepiece (magnification 80x). Of course I used a good adapter too. Frames has added with Gif maker pro mobile application.
Comet 252P/LINEAR passing through the constellation Mensa and approaching Earth on the 18th March 2016 by Mike O'Day ( 500px.com/MikeODay ). Comet 252P/LINEAR is a near-Earth comet that was discovered by the Lincoln Near-Earth Asteroid Research (LINEAR) project in April of 2000. 252P has an orbital period of 5.3 years and passes close to the orbit of the Earth. In 2016 it passed 'very close' to Earth (in astronomical terms) on the 21st of March 2016, when, at its nearest, it was only 14 times the distance to the moon (~5.3 million kms). This image was taken three days before comet 252P/LINEAR made its closest approach when it was at a distance of about 5.9 million kms ( position as at ~16:22 Fri 18 Mar 2016 UTC as seen from the Blue Mountains above Sydney Australia ) Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay Details: RA 06h 40m 38s, Dec -80 deg 18' 37" (Epoch 2016.2) Skywatcher Quattro 10" f4 Newtonian Skywatcher AZ Eq6 GT Mount Guiding: Orion Shortube 80 guidescope, Starshoot Autoguider, PHD2, (guiding on star) Baader MPCC Mark 3 Coma Corrector Hutech IDAS D1 light pollution filter Nikon D5300 (unmodified) Field of view (min) ~ 74 x 49 Stack of 185 x 7sec images @ ISO6400 Pixinsight (incl. Comet Alignment tool) Comet moved ~ 475 pixels East and 1470 pixels South during the time the images where captured. In the image Up is North and Left is East.