sponsored by psychohistorian.org

DOCdb

Deep Sky Observer's Companion – the online database

 

Welcome, guest!

If you've already registered, please log in,

or register an observer profile for added functionality.

List:

log in to manage your observing lists

 browse:

 

 position:

 

 next:

 

 options:

summary

rename

prune

trim

remove

close

copy

combine

plan

bookmark

load

new

delete

marathon

favourite!

Full database:

Entire DOCdb database of 18,816 objects.

 browse:

 position:

Seven Sisters of the Pole (1 of 18,816)

 next:

oc gc pln bn dn gx gxcl ast aka lost

show browsing

eta Carinae Nebula (NGC 3372)

Imaged by Dale Liebenberg

Subject: NGC 3372

Equipment: Tak FSQ106ED on TAK EM200 mount. SBIG 11k camera with remote guide head on Astrodon MMOAG off-axis guider, Takometer rotator, 3nm Astrodon filters.

Exposures: 10x (200 min) SII (Red); 10x (200 min) Ha (Green) and 8x (160 min) OIII (Blue)

Software: MaximDL, ACP, FMax

Processing: I calibrated the subs and stacked the three filter groups in MaximDL, thereafter applying FTT high pass, mild filter to each. The three filter groups where imported in PS CS4 where the processing was done.

 

Everything on DOCdb.net is © 2004-2010 by Auke Slotegraaf, unless stated otherwise or if you can prove you have divine permission to use it. Before using material published here, please consult the Creative Commons Attribution-Non-Commercial-Share Alike 2.5 License. Some material on DOCdb is copyright the individual authors. If in doubt, don't reproduce. And that goes for having children, too. Please note that the recommended browser for DOCdb is Firefox 3.x. You may also get good results with K-Meleon. Good luck if you're using IE. A successful experience with other browsers, including Opera and Safari, may vary.