Dolidze 27 (Lund 713) and LBN 35 Open Cluster and Bright Nebula in Ophiuchus

Center of field at approximately: RA 16 hours 35 minutes 46 seconds, Dec -08 degrees 55 minutes 22 seconds

Size: 25' and 20' x 10' Magnitude: -- and -- Class: IV 2 p n and Emission (HII)

North is up

West to the right

Telescope:

 8" f5 Newtonian reflector

Camera:

  ST-8XME, self-guided, binned 1x1, temp -15c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 730 minutes  (73 x 10 minute subs), 07/12/13/14/15/16/17/2009; seeing 2.1-3.5 FWHM per CCDStack

Processing:

CCDStack 1.6.0.4, Photoshop 7.0

Location:

 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)

Notes: This field contains one component of several LBN nebulae in west-central Ophiuchus. See this scan of a POSS I red plate of this area (scanned from 'Atlas of Galactic Nebulae', by Thorsten Neckel and Hans Vehrenberg; aka GN 16.28.1.01). The open cluster Dolidze 27 is the grouping of brighter stars at left center (not including the bright star closest the top edge of this image). Also, the CDS lists the Dark Nebula LDN 238 at 16 35.7, -08 46, just above LBN 35