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NGC 6888; Crescent Nebula

The following astronomical image was taken by a user of GoldAstro.com products and presented here by permission.  Copyrights may apply.  Please contact the credited imager to inquire about permission for use and/or availability of larger images.

NGC 6888

(2200 x 2200 pixels) or Zoom with Ctrl+ and Ctrl-
Object(s): NGC 6888; Crescent Nebula; Caldwell 27; Sharpless 105; emission nebula
Telescope: Meade 12" LX200GPS f/5.9
Camera: Atik 383L+
Mount: Meade LX200GPS w/ Superwedge, permanent pier
Filters: Orion S-II and H-a 7nm narrowband; Baader O-III 8.5nm narrowband;
Focus and
GoldFocus Plus Collimation Mask and Analysis Software v3.0
Autoguide: GoldGuide v2.1 w/ Orion 102mm Mak-Cass f/12.0, Meade DSI Pro II
Exposure: H-a:O-III:S-II = 375:410:390 min.; 5 min. subframes; total 19.6 hours
Process: H-a:O-III:S-II = RGB, CFHT palette; proprietary software, PixInsight 1.8, Photoshop CS4
FOV: 23' x 23'
Date(s): 1, 5 & 6 August 2012
Credit: Copyright © 2012 Jeff Winter, click for Inquiries