NGC 7235 (Cr 447) Open Cluster in Cepheus

Located at: RA 22 hours 12 minutes 30 seconds, Dec +57 degrees 16 minutes 35 seconds

Size: 4.0' (6.0'Magnitude: 7.7 visual Class: II 3 m

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

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

Image:

Lumicon Red filter,  270 minutes  (27 x 10 minute subs), 08/9/10/2014; seeing 2.5-4.3 FWHM per CCDStack

Processing:

CCDStack 2.81.5337.19441, Photoshop CS5.1

Location:

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

Notes: According to "Star Clusters", by Brent Archinal and Steven Hynes, the size of this open cluster is 6.0 arc minutes.

From the NGC / IC Project:

Contemporary Visual Observation(s) for NGC 7235
NGC 7235 = Cr 447 = Lund 1008 = OCL-229
22 12 25.0 +57 16 16
V = 7.7;  Size 4

18" (8/17/04): at 225x, nearly three dozen stars are resolved in a 4'x3' group, 
slightly extended E-W.  The brightest mag 9 star is at the east end.  A rich 
stream of faint stars over haze is the north side and angling WSW towards a mag 
10.5 star on the west end.

17.5" (11/2/91): two dozen stars mag 9-15 in a 4' diameter at 220x.  This 
moderately concentrated group is elongated WNW-ESE and includes several fairly 
bright stars.  A mag 9 star is at the east end and there are eight other mag 10-
11 stars.  Just west of the mag 9 star is a 1.5' circular hole with no stars.  A 
mag 10 star at the extreme west edge has six faint stars mag 13/14 close 
following.

A compact group of faint stars 13' S appears as a small, partially resolved 
nebulous glow at 100x.  At 220x, 7 stars are resolved from mag 14-15.5 within a 
1.5' diameter.  I had taken this as N7234 but Corwin's re-reduced position from 
William Herschel indicates that N7234 is identical to N7235.

- by Steve Gottlieb
Historical Research Notes / Correction for NGC 7235
NGC 7234 = NGC 7235.  N7234 was found by WH.  Reducing his observation as 
given in Dreyer's 1912 Collected Papers gives a position considerably 
different from the one given in GC and NGC.  Auwer's reduced position agrees
with the correctly reduced one, so this must be an error in CH's reduction of
her brother's data.

In any event, the correct position lands right on NGC 7235 found by JH who did
not record anything at his aunt's position for N7234. - Dr. Harold G. Corwin, Jr.