NGC 1746 is an asterism or open cluster in the constellation Taurus, it was discovered in 1828.
What you are actually looking at is not a single cluster but an optical grouping of stars belonging to three different clusters which just happen to be in the exact same spot in space when seen from our location. In reality they are at a distance of 420, 2.053 and 2.477 light years.
The 3 different clusters overlapping each other are NGC1746, NGC1750 and NGC1758.
Pressing one of the highlighted buttons will open a new window with an other size or version of the image above.
|Maximum size:||2000 x 1500px – LRGB Color|
Click on the different tabs shown below to view the corresponding object, image and equipment information.
The last tab is used for any comments regarding the image, focus, framing, conditions etc.
|Right ascension||:||05h 03m 50s|
|Declination||:||+23° 46′ 04″|
|Image date||:||Dec. 29, 2013|
|Light frames||:||6x 4 min. RGB (each) unbinned|
|Total integration||:||1h 12m|
|Dark frames||:||30x unbinned|
|Flat frames||:||25x p. filter unbinned
Created with an A3 size Posterpoweruk flatfield panel
|Bias frames||:||25x unbinned|
|Software used||:||CCDOps, CCDSoft, Maxim DL, Photoshop CS4|
|Processing||:||CCDOPS was used for focussing. Image Acquisition was done using CCDSoft.
All separate frames were calibrated, aligned and stacked in MaxIm DL5 Pro.
Photoshop CS4 was used for further processing – curves adjustment, levels adjustment, etc.
Noel Carboni’s toolset was used as well (Local Contrast Enhancement, Deep Space Noise Reduction)
(L)RGB combine was done in Photoshop.
|Corrector||:||Televue 2″ TRF 2008 flattener/reducer with 15% decrease focal length: 384mm f/4.8|
|Mount||:||Losmandy G-11 Gemini|
|Guide camera||:||Atik 1HS Mono|
|Guide scope||:||Vixen VMC110L|
|Autoguide software||:||PHD Guiding|
|Filters||:||Baader 2″ RGB + IDAS LPS-P2|
|Location||:||Landgraaf, The Netherlands|
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