NGC 253: Without and With Annotation **EDITED**

[nandopg]

Hello,
For not to be too long and for those interested in the topic, please have a look on the article:


http://iopscience.iop.org/0004-637X/636/2/685/pdf/0004-637X_636_2_685.pdf


Some Databook Information For NGC 253
Right Ascension: 00:47.6 (h:m)
Declination: -25:17 (deg:m)
Distance: ~ 10 million light years
Apparent Dimension: 26.4 x 6 (arc min)
Magnittude: 7.2
Object Type: Barred Spiral Galaxy


Image Details:
Luminance: 15x900sec bin 1x1
Blue: 15x600sec bin 2x2
Red: 15x600sec bin 2x2
Green: 12x600sec bin 2x2


Telescope: Skywatcher Esprit 120mm f/7
CCD: Trius SX-694
StarLight Express Mini Filter Wheel and OAG
CCD Guiding: Lodestar
Capture and guiding software: MaxIm DL 6.0
Mount: EQ-6 Pro
Processing: PixInsight
Bias, Darks and Flats applied



For high rresolution images click on the links below

Image without overlay (http://cdn.astrobin.com/images/thumbs/f80c4ee162880b57f0b36d8372ca1a02.18 24x0_q100_watermark.jpg)


Image with overlay (http://cdn.astrobin.com/images/thumbs/566d3a20c7315bbc687ae280ea9ec341.18 24x0_q100_watermark.jpg)

In annotated version, please pay attention mainly for the background galaxies and their PGC catalog's numbers. They represent a wealth of new information for styding.

Thanks for looking,

Fernando

** A note about the edition: The image has been rotated by 90 degrees, as suggested by Rick, to improve visibility in regular monitors.
Thanks for the suggestion Rick!! **

[Shiraz]

that is a really good image Fernando:thumbsup:. lovely colour and detail is excellent.

maybe suggest that you realign it so that it runs across the screen - make it easier to look at.

[RickS]

A very nice 253, Fernando! It's always interesting to see what AnnotateImage picks up in these fields. I have been thinking about adding some new catalogs...

[Ross G]

Great looking galaxy photo Fernando.

I love the colour.

Ross.

[nandopg]

Ray,
Thank you very much. You are absolutely right, I've never framed an object so badly:mad2: like I did this one. I think that if I rotate, I would lose too much space around, apart from to lose some small details because the re-sampling is inevitable. Unless you have another suggestion to do this, do you have ?



Hi Rick,
Thank you. I also think so. Looking the background galaxies in the PGC catalog and putting some research on some of them is an endless intellectual activity, great to keep our background updated.

Best Regards,
Fernando



Ross,
Thank you very much, appreciate your kind comment.
Fernando

[Shiraz]

A simple rotation by 90 degrees should not involve resampling, so detail will be retained. Please don't think that I am criticising your image in any way, just suggesting that it would fit better on the average computer screen if rotated.

[nandopg]

Oh Ray, please don,t think on this. I accepted your suggestion as a very good one and I have to thank you for your time to reply this second time. I think you are right as for the 90 deg rotation. I will be doing that tomorrow and uploading the new version.

Best Regards my friend,

Fernando

[nebulosity.]

Very nice image! Great work. :thumbsup:

Jo

[weathermon]

Fantastic work with 253! Well done :thumbsup:

[PeterEde]

Great shot

[nandopg]

Hi Jo,
Thank you for the thumbs up


Hello,
Thanks for the warm evaluation


Thank you !!

[strongmanmike]

Hey Nando, that's a good 253 and I like to see it with some good colour like you have showing here:thumbsup:

Mike

[nandopg]

Hi Michael,
Thanks for your comment. A little color saturation without overcooked it keeps the beauty of the object.
Thanks also for reinforcing this concept!

Best Regards,

Fernando