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M81, M82, and NGC 3077, taken over 3 nights back in early to mid March.
Out of the 7 hours of good data collected, DSS was able to stack only 5 hours with reasonable sharpness. Added the remaining 2 hours of data causes the final stacked image to get quite fuzzy. My theory is that DSS is unable to handle the geometric distortion of the lens as the targets were captured on different parts of the sensor on different nights.
Couple of folks from my local club provided good pointers on noise reduction and chromatic aberration, which really helped improve this image.
Hopefully I’ll get to collect some Ha data to add to this image before the targets dip too low for the rest of the year.
Imaging: Canon EOS T4i, EF 300 mm f/4L IS lens, Astronomik L2 filter, APT
Tracking / Guiding: iOptron Skyguider Pro, QHY mini guide scope, ASI 120 mm mini, PHD2
Subs: 52 x 120 sec @ ISO400 + 13 x 300 sec @ ISO 400 + 28 x 300 sec @ ISO 800, plus calibration frames
Processing: DSS, Photoshop, Astrophotography Tools Action Set, Lightroom
Attachments
Canon T4i (astro-modified), EOS R
Skywatcher Quattro 8 CF, Skywatcher Quattro CC, Canon 300 mm f/4L IS
iOptron GEM45, iOptron Skyguider Pro, QHY mini guide scope, ZWO 120 mini
STC Duo-Narrowband, Astronomik L2 UV/IR cut, Skytech Tri-band
Astro and terrestrial photography at https://www.instagram.com/jonathan.sau.photography
messier 111 wrote: ↑Fri May 21, 2021 2:40 am
wow , very nice capture , thx .
MariusD69 wrote: ↑Fri May 21, 2021 4:34 pm
Awesome! Great job!
Thanks Jean-Yves and Marius!
Canon T4i (astro-modified), EOS R
Skywatcher Quattro 8 CF, Skywatcher Quattro CC, Canon 300 mm f/4L IS
iOptron GEM45, iOptron Skyguider Pro, QHY mini guide scope, ZWO 120 mini
STC Duo-Narrowband, Astronomik L2 UV/IR cut, Skytech Tri-band
Astro and terrestrial photography at https://www.instagram.com/jonathan.sau.photography
Hi Jon. A well spent 7 hours of collecting data. A beautiful image, with great contrast, wide field of view, and lots of nice details. Thanks for sharing this capture with us on here Jon, and congratulations on winning the TSSAPOD Award today.
Marshall
Sky-Watcher 90mm f/13.8 Maksutov-Cassegrain on motorized Multimount
Orion Astroview 120ST f/5 Refractor on EQ3 mount
Celestron Comet Catcher 140mm f/3.64 Schmidt-Newtonian on alt-az mount
Celestron Omni XLT150R f/5 Refractor on CG4 mount with dual axis drives.
Orion 180mm f/15 Maksutov-Cassegrain on CG5-GT Goto mount.
Orion XT12i 12" f/4.9 Dobsonian Intelliscope.
Kamakura 7x35 Binoculars and Celestron SkyMaster 15x70 Binoculars. ZWO ASI 120MC camera.
>)))))*>
Makuser wrote: ↑Sat May 22, 2021 7:32 pm
Hi Jon. A well spent 7 hours of collecting data. A beautiful image, with great contrast, wide field of view, and lots of nice details. Thanks for sharing this capture with us on here Jon, and congratulations on winning the TSS APOD Award today.
STEVE333 wrote: ↑Fri May 21, 2021 11:38 pm
Pretty WFOV image Jonathan
Steve
Thank you @TheButcher, Marshall and Steve!
Canon T4i (astro-modified), EOS R
Skywatcher Quattro 8 CF, Skywatcher Quattro CC, Canon 300 mm f/4L IS
iOptron GEM45, iOptron Skyguider Pro, QHY mini guide scope, ZWO 120 mini
STC Duo-Narrowband, Astronomik L2 UV/IR cut, Skytech Tri-band
Astro and terrestrial photography at https://www.instagram.com/jonathan.sau.photography
