{"id":1534,"date":"2022-05-02T20:49:42","date_gmt":"2022-05-03T00:49:42","guid":{"rendered":"http:\/\/mvas.org\/mvas_wp\/?p=1534"},"modified":"2022-05-02T20:49:43","modified_gmt":"2022-05-03T00:49:43","slug":"m92-globular-cluster-in-hercules-4","status":"publish","type":"post","link":"https:\/\/mvas.org\/?p=1534","title":{"rendered":"M92 \u2013 Globular Cluster in Hercules"},"content":{"rendered":"\n
\"\"
M92 \u2013 Globular Cluster in Hercules<\/figcaption><\/figure>\n\n\n

Telescope: Unitron 1<\/span><\/span><\/span>55<\/span><\/span><\/span> 4<\/span><\/span><\/span>\u201d f\/15 <\/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 GSO IR Cut<\/span><\/span><\/span><\/span> Filter<\/span><\/span><\/span><\/span><\/p>\n

Guide scope: <\/span><\/span><\/span>Orion 50mm Guidescope, ASI120MM, PHD, Dithered every 4 subs<\/span><\/span><\/span><\/span><\/p>\n

Exposure: <\/span><\/span><\/span>28<\/span><\/span><\/span>x<\/span><\/span><\/span>1<\/span><\/span><\/span>2<\/span><\/span><\/span>0<\/span><\/span><\/span>sec, <\/span><\/span><\/span>ISO<\/span><\/span><\/span> 8<\/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>8<\/span><\/span><\/span><\/span>0s <\/span><\/span><\/span><\/span>tee shirt 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: 18.5 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

M92 is the \u2018other\u2019 globular cluster in Hercules. M92 lies to the northeast of the popular M13 globular cluster in a relatively lonely patch of sky making it a bit harder to locate, but well worth the effort. Interestingly, M92 is listed as being fainter than M13 (Mv 6.4 for M92 vs. 5.8 for M13), but I find the core of M92 to be a tad brighter than M13. The larger apparent size of M13 likely contributes to its slightly higher total integrated brightness.<\/p>\n

M<\/span><\/span><\/span><\/span>9<\/span><\/span><\/span><\/span>2<\/span><\/span><\/span><\/span> currently<\/span><\/span><\/span><\/span> ris<\/span><\/span><\/span><\/span>es<\/span><\/span><\/span><\/span> in the northeast during the <\/span><\/span><\/span><\/span>early<\/span><\/span><\/span><\/span> evening. <\/span><\/span><\/span><\/span><\/p>","protected":false},"excerpt":{"rendered":"

Telescope: Unitron 155 4\u201d f\/15 refractor, Atlas EQ-G Camera: Canon EOS Ra full frame DSLR Filter: 2\u201d GSO IR Cut Filter Guide scope: Orion 50mm Guidescope, ASI120MM, PHD, Dithered every 4 subs Exposure: 28x120sec, ISO 800, saved as RAW Darks: Internal (Long Exposure Noise Reduction) Flats: 32×1\/80s tee shirt flats taken at dusk Average Light […]<\/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":[14,15],"tags":[],"class_list":["post-1534","post","type-post","status-publish","format-standard","hentry","category-forums-beginner-imaging","category-forums-deepsky-imaging","entry"],"yoast_head":"\nM92 \u2013 Globular Cluster in Hercules - 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=1534\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"M92 \u2013 Globular Cluster in Hercules - 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