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View Full Version here: : Orion Belt & Sword 220mm - 2 panel mosiac


tilbrook@rbe.ne
26-03-2014, 01:50 PM
Hi,

Another mosaic using bog standard zoom lens and unmodified Canon 1100D.
Apart from crappy stars that are produced by this lens, I'm pleasantly surprised with the detail in the rest of the image.:)

Canon 1100D unmodified - 75 to 300 zoom at f/ 6.3 - ISO 800.
Piggy backed on HEQ Pro 5 mount, orion mini guider.

Subs 30 sec - 5 minutes and 8 minutes.

Cheers,

Justin.

LewisM
26-03-2014, 01:52 PM
Nothing bog standard about the result! Superlative as usual.

Larryp
26-03-2014, 02:56 PM
Another superb image, Justin :thumbsup:

atalas
26-03-2014, 04:04 PM
Nice Pic Justin.

Regulus
26-03-2014, 04:42 PM
Nice photo Justin with very nice colour.

Which version of the standard 70-300 is that? There seems to be a few below the 'L' series, the III, III USM, the IS USM, and the EF 70-300mm DO IS USM (from cheapest to dearest)

I have the IS USM but haven't used it for Astropics yet so I will be interested to see the results.

I tend toward old manual focus lenses for the sky because the Auto's have such a small travel distance from close to infinity and it can be a bit hard to manually focus them. The are loose to focus too once the motors disengaged, so I prefer the firmer manuals where you might need to turn the focus ring through more than a whole turn to get focus.

Trevor

rogerg
26-03-2014, 05:42 PM
I'm shocked at how much detail you have there in the nebulosity, in particular around the horsehead. I wasn't managing to squeeze that much out of some 5min 1600ISO 6D subs I did recently yet you're using 30s :eyepop: :shrug:

The only CC I'd have is to de-noise some more maybe, and to balance the processing of the two frames - seems quite obvious one FOV has significantly more stars than the other ?

SimmoW
26-03-2014, 07:24 PM
congrats on a great image, esp with such a lens! Is this from a darksite or are you using an LP filter?

tilbrook@rbe.ne
26-03-2014, 08:02 PM
Thanks Lewis!



Thanks Laurie!



Thanks Louie!



Thanks Trevor!

It's the standard EF 70 to 300mm kit lens that came with the camera.
I agree about the loose focus, it can be challenging.



Thanks Roger!

Most of the subs are 8 minutes from a dark site, it's amazing what 3 minutes extra does.
I was intrigued by the difference in stars from both frames. I just looked at individual subs, both of 8 minutes exp and there's definitely more stars around the belt region.
Focus might be one factor and foreground nebulosity another for the Orion neb region.
I'll post the two subs later so you can see the difference.




Thanks Simon!

Yep dark sky site, I'm lucky to live in a rural area.

Cheers,

Justin.

rogerg
26-03-2014, 11:28 PM
Ohhh, right, I get it. I read it as "30 sec subs, 5 and 8 minutes" as in, 5 + 8 minutes comprising of 30 second subs! I get it now :) I don't feel so bad about my attempt with 5 mins 1600ISO under light polluted skies now :)

cazza132
27-03-2014, 09:15 PM
Nice details - very good for an unmodded cam. Love the star colours!

nebulosity.
27-03-2014, 09:38 PM
Real nice Justin :thumbsup:

Jo

tilbrook@rbe.ne
28-03-2014, 08:08 AM
Thanks Cazza!



Thanks Jo!

Going to add M78 to this mosaic.

Cheers,

Justin.

astronobob
29-03-2014, 01:58 AM
Grouse one Justin, I like it :thumbsup:

tilbrook@rbe.ne
29-03-2014, 08:59 AM
Thanks Bob!:thumbsup:

Cheers,

Justin.

David Fitz-Henr
30-03-2014, 01:50 PM
Another nice image Justin; it's interesting to see these nebulae in context with the three stars in Orion's belt as well :thumbsup:

tilbrook@rbe.ne
01-04-2014, 01:33 PM
Thanks David!

Yep, like context shot's.

Cheers,

Justin.