{"id":2031,"date":"2023-08-09T19:59:53","date_gmt":"2023-08-09T23:59:53","guid":{"rendered":"https:\/\/mvas.org\/mvas_wp\/?p=2031"},"modified":"2023-08-09T20:05:25","modified_gmt":"2023-08-10T00:05:25","slug":"m2-globular-cluster-in-aquarius-7","status":"publish","type":"post","link":"https:\/\/mvas.org\/?p=2031","title":{"rendered":"M2 \u2013 Globular Cluster in Aquarius"},"content":{"rendered":"\n
\"\"<\/a><\/figure>\n\n\n

Telescope: Unitron <\/span><\/span><\/span>5<\/span><\/span><\/span>10<\/span><\/span><\/span> 5<\/span><\/span><\/span>\u201d f\/1<\/span><\/span><\/span>6<\/span><\/span><\/span> refractor, <\/span><\/span><\/span>Atlas EQ-G<\/span><\/span><\/span><\/span><\/p>\n

Camera: Canon EOS Ra <\/span><\/span><\/span><\/span>full frame DSLR<\/span><\/span><\/span><\/span><\/p>\n

Filter: 2\u201d ZWO IR Cut Filter<\/p>\n

Guide scope: <\/span><\/span><\/span>Williams Optics<\/span><\/span><\/span><\/span> 50mm Guidescope, ASI<\/span><\/span><\/span><\/span>29<\/span><\/span><\/span><\/span>0MM, PHD<\/span><\/span><\/span><\/span><\/p>\n

Exposure: <\/span><\/span><\/span>24<\/span><\/span><\/span>x<\/span><\/span><\/span>6<\/span><\/span><\/span>0<\/span><\/span><\/span>sec, <\/span><\/span><\/span>ISO<\/span><\/span><\/span> 16<\/span><\/span><\/span><\/span>00<\/span><\/span><\/span><\/span>, saved as <\/span><\/span><\/span>RAW<\/span><\/span><\/span><\/p>\n

Darks: Internal (Long Exposure Noise Reduction)<\/span><\/p>\n

Flats: <\/span><\/span><\/span>32×1\/<\/span><\/span><\/span><\/span>1<\/span><\/span><\/span><\/span>0<\/span><\/span><\/span><\/span>s <\/span><\/span><\/span><\/span>sky<\/span><\/span><\/span><\/span> flats taken at dusk<\/span><\/span><\/span><\/span><\/p>\n

Average Light Pollution: Bortle 8,<\/span><\/span><\/span><\/span> fair<\/span><\/span><\/span><\/span> transparency<\/span><\/span><\/span><\/span><\/p>\n

Lensed Sky Quality Meter: 18.6 mag\/arc-sec^2<\/p>\n

Stacking: Mean with a 1-sigma clip<\/p>\n

White Balance: Nebulosity Automatic<\/p>\n

Software: Backyard EOS, Deepsky Stacker<\/span>, Nebulosity, Photoshop<\/span><\/p>\n

M2 is a big, beautiful globular cluster that is well placed in the eastern sky in late summer and early fall. It is an easy target for a small telescope. Under dark skies it can even be glimpsed without a telescope or even binoculars. M2 is about 37,500 light years away and lies beyond the galactic center. Like most globular clusters M2 is an ancient relic of the early universe with an estimated age of about 13 billion years.<\/span><\/p>\n

This is the fourth<\/span><\/span><\/span><\/span> of 5 test images taken with my Unitron 510. M2 is currently rising<\/span><\/span><\/span><\/span> in the east in late evening. (Photo credit; John Graham, 7\/14\/2023)<\/p>","protected":false},"excerpt":{"rendered":"

Telescope: Unitron 510 5\u201d f\/16 refractor, Atlas EQ-G Camera: Canon EOS Ra full frame DSLR Filter: 2\u201d ZWO IR Cut Filter Guide scope: Williams Optics 50mm Guidescope, ASI290MM, PHD Exposure: 24x60sec, ISO 1600, saved as RAW Darks: Internal (Long Exposure Noise Reduction) Flats: 32×1\/10s sky flats taken at dusk Average Light Pollution: Bortle 8, fair […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"nf_dc_page":"","pgc_sgb_lightbox_settings":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[15,1],"tags":[],"class_list":["post-2031","post","type-post","status-publish","format-standard","hentry","category-forums-deepsky-imaging","category-uncategorized","entry"],"yoast_head":"\nM2 \u2013 Globular Cluster in Aquarius - Miami Valley Astronomical Society<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mvas.org\/?p=2031\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M2 \u2013 Globular Cluster in Aquarius - 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