Embedded Files
Post date: Jun 18, 2021 12:56:32 AM
imaged NGC4490 from Buford Mountain Conservation Area.
NGC4490 and NGC4485 imaged on May 29, May 30 and June 10, 2021 UTC through a 200 mm aperture, 730 mm focal length F/3.65 Boren-Simon PowerNewton Astrograph with 0.73x focal reducer and coma corrector. The imaging camera was a QSI683wsg-8 with Astrodon II filters and cooled to -15C, with off-axis guiding. The system was mounted on a Losmandy G11G2 equatorial head on a permanent pier. The system was controlled with Sequence Generator Pro and PHD2 and the image was processed in PixInsight.
15 Luminance frames x 5 min binned 1x1 and 9 RGB frames x 5 minutes each binned 2x2 for a total exposure of 2 hours. 16 flats, bias and darks frames.
Pixel size ............... 5.40 um
Field of view ............ 1d 21' 46.6" x 1d 1' 34.0"
Image center ............. RA: 12 30 35.692 Dec: +41 38 44.24
This is a crop of the central region.
Page updated
Google Sites
Report abuse