2020年2月25日 · M51 with 300mm lens - posted in DSLR, Mirrorless & General-Purpose Digital Camera DSO Imaging: Star Adventurer, Canon 600D, Sigma 70-300mm lens maxed out to …

2015年5月25日 · I really didn’t even intend to image an object… just wanted to test a newly acquired 300mm F/4L that I picked up on e-bay for cheap (broken autofocus). The lens looked …

2016年3月10日 · Here is my effort to get M51 with a 300 mm telephoto lens on a slightly windy night in a bright green zone just a little west of Denver. 53 minutes total exposure time with a …

2006年5月2日 · M51 with 300mm tele lens - posted in DSLR, Mirrorless & General-Purpose Digital Camera DSO Imaging: This is a 100% full frame’s crop I took with a 300mm tele lens …

2017年3月26日 · M51 as seen from the mountains of central PA on 3/22/17. Acquisition details: Nikon D3200 - 300mm - f/5.6 - ISO 800. 18x 2 minute lights, 5x 2 minute darks, 5x bias …

Test pic for Star Adventurer DEC guiding with Photorobot. Dithering and guiding worked 100% without dropouts, but mechanics found not being user friendly and reliable enough. Canon's …

My first attempt at M51. Canon 400D and 300mm lens. F10 30x1min 800 ISO exposures. On Astrotrac mount. Stacked in DSS and PSP tweaked. Not bad for partly urban light pollution, …

2017年4月30日 · Acquisition: Nikon D3200, 300mm, f/5.6, ISO 800, 18 2-minute lights, 5 darks, 5 bias, 50 flats. Tracked using the AstroTrac TT320X-AG Stacked using Deep Sky Stacker and …

2013年4月3日 · I still regard myself as a relative beginner to astrophotography. Maybe more intermediate now, but I managed to grab this shot of M51 last night from heavily LP'd …

2016年4月12日 · Whirlpool Galaxy M51 with AFS 300mm f/4 E PF at f/4.5, 82 x 60 sec, ISO 1600, 2 x drizzle in DSS. Now to the question: I have noticed that many members of this forum …