The Spider in NGC 2070

[PhotonCollector (Paul)]

Hi all,

Here's a recent image of the Tarantula Nebula, you can really see the spider!

There's a higher resolution image here http://www.skylab.com.au/pmsa/Tarantula%20Nebula.html

regards to everyone
Paul Mayo


<TABLE id=table1 cellPadding=4 border=0><TBODY><TR><TD vAlign=top>

Image Details

</TD><TD vAlign=top align=left>20060326</TD></TR><TR><TD vAlign=top>

Image Field of View

</TD><TD vAlign=top align=left>14 x 11 arc-minutes (approx.). North is up.</TD></TR><TR><TD vAlign=top>

Telescope

</TD><TD vAlign=top align=left>12-inch f/5 newtonian telescope.</TD></TR><TR><TD vAlign=top>

Guiding

</TD><TD vAlign=top align=left>hand guided with 4.5-inch guide-scope.</TD></TR><TR><TD vAlign=top>

Camera

</TD><TD vAlign=top align=left>Canon EOS 300D Digital - Hα/IR enabled.</TD></TR><TR><TD vAlign=top>

Exposures

</TD><TD vAlign=top align=left>6 x 4 minute exposures @ ISO 200.
dark frame subtracted, bias and flat-fielded.</TD></TR><TR><TD vAlign=top>

Total Exposure time

</TD><TD vAlign=top align=left>24-minutes.</TD></TR><TR><TD vAlign=top>

Filter/Equipment

</TD><TD vAlign=top align=left>Used Baader Multi-purpose Coma Corrector.</TD></TR><TR><TD vAlign=top>

Sky Conditions

</TD><TD vAlign=top align=left></TD></TR><TR><TD vAlign=top>

Ambient Temperature

</TD><TD vAlign=top align=left>14.5°C</TD></TR><TR><TD vAlign=top>

Processing

</TD><TD vAlign=top align=left>Iris, Photoshop, Noiseware CE.</TD></TR></TBODY></TABLE>

[Octane (Humayun)]

Paul,

Once again, that's beautiful.

Is the purple colour of the nebula the captured colour, or have you played with it in post-processing?

Regards,
Humayun

[tornado33]

Yes a great image. Thats the captured colour. Unmidified DSLRs shower a lighter shade but the Ha enabled cameras let in much more red light from Ionized Hydrogen in nebulae giving the pink colour from a mix of Hydrogen Alpha (red) and ionized Oxygen and Hydrogen beta (greenish) to give pink.
See spectrum here, of a deep sky filter
http://www.lumicon.com/images/deepsky_chart.jpg

[EzyStyles (Eric)]

Very nice image Paul. can see the spider clearly. With my spider, the natural colour came out green/brown/yellowish with IR Filter removed. That colour looks suberb.

[sheeny (Al)]

Excellent photo, well done.

Al.

[videoguy]

Nice pic Paul!

[PhotonCollector (Paul)]

Thanks guys for taking the time to make a comment.

Clear Skies to you all.
Paul Mayo

[PhotonCollector (Paul)]

Originally Posted by Octane

Paul,

Once again, that's beautiful.

Is the purple colour of the nebula the captured colour, or have you played with it in post-processing?

Regards,
Humayun

That's a good question and I think tornado33 has given a suitable answer.

Here's an image of the Tarantula prior to the camera blocking filter modification.
Pre-Mod: http://www.skylab.com.au/pmsa/images...015_18_21M.jpg

You will see it looks more green (rather than purple) in the pre-modded image.

cheers
Paul M