{"id":233,"date":"2016-10-09T10:48:25","date_gmt":"2016-10-09T09:48:25","guid":{"rendered":"http:\/\/trafyx.com\/?page_id=233"},"modified":"2016-10-09T10:49:04","modified_gmt":"2016-10-09T09:49:04","slug":"melotte-15-5-3","status":"publish","type":"page","link":"http:\/\/trafyx.com\/?page_id=233","title":{"rendered":"Abell 81"},"content":{"rendered":"

\"Abell
Abell 81\u2014Planetary Nebula in Cepheus (IC 1454, PK 117+18 1, ARO 376)<\/figcaption><\/figure>
\n[layout cols=”2-3″ position=”first” textalign=”left”]<\/p>\n

Image Data<\/h4>\n

Telescope: 10\u2033 Aries f\/15 Maksutov-Cassegrain on Astro-Physics 900GTO German Equatorial
\nAccessories: Moravian G1-0300 as Off-Axis Guider, 0.67X Astro-Physics CCD Telecompressor
\nFocal Length and Resolution: 2692 mm, 0.52″\/pixel
\nInstrument: QSI 532wsg at -20 deg. C
\nExposures: H-alpha (G): 2×30 min, O-III (B): 2×30 min, S-II (R): 2×30 min. Total: 3 hours
\nFilter(s): Astrodon Narrowband
\nExposure Date: 21 April 2011
\nSeeing, FWHM: 2″
\nProcessing Software: MaximDL, PixInsight, Photoshop
\nImage Acquisition Software: MaximDL, TheSky6, CCDAutoPilot, FocusMax, PinPoint
\n[\/layout]<\/p>\n

[layout cols=”1-3″ position=”last” textalign=”left”]<\/p>\n

Object Data<\/h4>\n

Constellation:\u00a0Cepheus
\nType:\u00a0Planetary Nebula
\nDimensions: 38.16″
\nMagnitude: 14.8 (B), 14.0\u00a0(V)
\n[\/layout]<\/p>\n

Processing Procedure<\/h4>\n

Central star not visible (filters too faint, poor conditions: transparency 1\/5 during the session.)
\nProcessing steps: RGB combine, Histogram Transform, ACDNR Noise Reduction, Erosion, Histogram Transform (small tweak), HDR<\/p>\n

 <\/p>\n

SIMBAD\u00a0Query<\/h4>\n

Papers on this object can be obtained via SIMBAD<\/a>\u00a0astronomical database\u00a0hosted by the Centre de Donn\u00e9es astronomiques de Strasbourg.<\/p>\n","protected":false},"excerpt":{"rendered":"

[layout cols=”2-3″ position=”first” textalign=”left”] Image Data Telescope: 10\u2033 Aries f\/15 Maksutov-Cassegrain on Astro-Physics 900GTO German Equatorial Accessories: Moravian G1-0300 as Off-Axis Guider, 0.67X Astro-Physics CCD Telecompressor Focal Length and Resolution: 2692 mm, 0.52″\/pixel Instrument: QSI 532wsg at -20 deg. C Exposures: H-alpha (G): 2×30 min, O-III (B): 2×30 min, S-II (R): 2×30 min. Total: 3 […]<\/p>\n","protected":false},"author":1,"featured_media":234,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-fullwidth.php","meta":[],"_links":{"self":[{"href":"http:\/\/trafyx.com\/index.php?rest_route=\/wp\/v2\/pages\/233"}],"collection":[{"href":"http:\/\/trafyx.com\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"http:\/\/trafyx.com\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"http:\/\/trafyx.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/trafyx.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=233"}],"version-history":[{"count":2,"href":"http:\/\/trafyx.com\/index.php?rest_route=\/wp\/v2\/pages\/233\/revisions"}],"predecessor-version":[{"id":236,"href":"http:\/\/trafyx.com\/index.php?rest_route=\/wp\/v2\/pages\/233\/revisions\/236"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/trafyx.com\/index.php?rest_route=\/wp\/v2\/media\/234"}],"wp:attachment":[{"href":"http:\/\/trafyx.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}