IC410 and open cluster NGC1893
Characteristics:
Magnitude: 7.5 (for the open cluster).
Size: about 11' (for the
open cluster). However, the FOV shown
here is approximately 1 degree, which demonstrates the extent of
nebulosity associated with IC410.
Distance: ?
RA: 5h 22m 44s
Dec: +33 degrees 24' 43"
Description:
IC 410 is a region of faint Ha nebulosity surrounding the open star
cluster NGC 1893. The cluster itself is small and located just
below center, underneath the central dust region of the nebula.
This nebula contains complex wisps of gas and is a beautiful target for
Ha astrophotography, although it is surprisingly difficult to find
detailed information about this region on-line. The two prominent
filamentous columns located just below and left of center may have been
blown outward as a result of radiation emitted from the open cluster
(notice how their "tails" generally point away from NGC 1893).
The lower column has a curved, globular head which might represent a bow shock as
gases pushed by radiation accumulate in this region, and/or might
indicate an area of star formation.
Photographic Details:
Date: November 12, 2005.
Scope: Takahashi
FS-102 at f6 with TOA-130 focal reducer, on the G11 Losmandy
Mount.
Autoguider: SBIG STV with
e-finder.
Camera: Maxcam CM10.
Filter: Astronomiks
6nm Ha filter.
Exposures: L: 18
x 10' unbinned, total luminance
exposure 3
hours.
Conditions: Temperature 32 degrees F, average
transparency, poor seeing, calm, clear. I had hoped to
obtain OIII data as well, but had difficulty with a stuck shutter
during unattended imaging that ruined most of the OIII exposures.
Post-processing:
Subs were
calibrated and aligned in Maxim. Combined using RC Sigma
Reject Plug-in for MaximDL, followed
by DDP
in ImagesPlus (IP). Further processing in Photoshop CS (16
bit format).
Please
note: Graphics on this website may not be reproduced without
author permission.
Back to Hydrogen Alpha
Home
