Bug Nebula with eye piece projection.

[tilbrook@rbe.ne]

Hi,

Always wanted to image NGC6302 the Bug Nebula.

Not an easy task with eye piece projection, not the best image but worth it just to see if it was possible.

I used a 15mm 63 deg apparent field swan eye piece for projection, so I'm posting a cropped version.
The stars on the outer edge are terrible.

This is the first time I've used ISO 6400, really needed it to get any detail in the nebula, very faint using projection.

8” F/4 astrograph , HEQ Pro 5 mount, orion mini guider.
Unmodded Cannon 1100D.

20 x 3 minute subs ISO 6400 . Stacked in Deep Sky Stacker .Processed in Photoshop 7 .


Cheers,

Justin.

[strongmanmike]

Great exercise Justin and a decent result too, well done :thumbsup:

Mike

[jsmoraes]

Great effort, Justin. The projection causes loss of sharpness and some chromatic issues. But the nebula was well registered. Nice color and good shape.

Why ISO 6400 ? It causes many noise. Perhaps more time of exposure with low ISO.

I reckon that a good barlow will bring better result.

[tilbrook@rbe.ne]

Thanks Mike!

Always fun to experiment.:)




Thanks Jorge!

Why ISO 6400, that's easy to answer.
The focal length with eye piece projection is 3200mm, I'm using an Orion Mini guider which is good for 1500mm.
So I needed fast acquisition of the bug, to allow for guiding at this F/L and it was very faint with projection method.
I tried ISO 1600 at 5 minutes but not enough signal and the guiding starts to get a little wonky at this exposure time.

Might try the 8" Schmidt cassegrain with ED barlow tonight and see how that goes.

Cheers,

Justin.

[Shiraz]

That was worth doing Justin. The colours are great and it looks like it guided fine. maybe a Barlow might do OK on this scope as well - possibly get tidier stars on the periphery. Regards Ray

[tilbrook@rbe.ne]

Thanks Ray!

Yep, trying the Bug with the ED barlow and 8" f/4 tonight, and if there's enough time the 8" Schmidt Cassergrain.

Cheers,

Justin.

[astronobob]

Well, Ya never never know if Ya never go ,,,
I rekon that a worthy time well spent Grouse job :thumbsup:
Seeing a few bugs of late, mes getting the bug to catch bug, when the cleeewds bugga off .
Nice work & looking forward to ya others ...

[David Fitz-Henr]

That's not too shabby at all Justin; interesting to see the results of eyepiece projection. I'll be interested to see how you go with the 8" SCT / barlow combination.

[Regulus]

Not to bad a result Justin, and I am interested in the results of the planned shots.
Just discussing using one of the cheap GSO projection lenses on a SW80EDPro with a friend to see if it's worth pursuing further as a technique for solar system objects.

[tilbrook@rbe.ne]

Thanks Bob!:thumbsup:

Hope to get some of that ''Beautiful one day, perfect the next'' weather, as I'll be up your way next week.

Does Queensland still have some of that.:question:



Thanks David!:thumbsup:

Only managed to get 20 minutes with the 8" f/4 and barlow on the past couple of nights, very cloudy!!
It will be interesting with SCT and barlow, think it will be pushing beyond the limits.




Thanks Trevor!:thumbsup:

Hopefully tonight I'll get a bit more done.
I reckon projection could work quite well with the right eye piece.
Might try it with a trusty old orthoscopic.:)

Cheers,

Justin.

[cybereye]

No, just clouds.... :mad2: ...nice bug btw! While you're up here don't forget to get stuck into some Balmai.... oops, Moreton Bay Bugs... :thumbsup:

Cheers,
Mario

[astronobob]

Weather is fine here SeQld at the moment, bit of high level moisture floating around, 15°C mins & low 20-23°C max's :thumbsup:
Lots to investigate around QLD, like Coal Mine Dust, Barrier Reef Dumps Plus traffic Jamms :rofl: :thumbsup: :thumbsup:

[atalas]

Great effort Justin.

[tilbrook@rbe.ne]

Here's another image of the bug.
This time 8' f/4 and 2 x ED Barlow.
Only 20 minutes of data, better stars than EP projection but some image tilt.
Image is cropped to same size as EP projection.

Quote:
Originally Posted by cybereye http://www.iceinspace.com.au/vbiis/images/buttons/viewpost.gif (http://www.iceinspace.com.au/forum/showthread.php?p=1088995#post108899 5)
No, just clouds.... :mad2: ...nice bug btw! While you're up here don't forget to get stuck into some Balmai.... oops, Moreton Bay Bugs... :thumbsup:

Cheers,
Mario

Thanks Mario!:thumbsup:

Will give the terrestrial bugs a go.

Weather is fine here SeQld at the moment, bit of high level moisture floating around, 15°C mins & low 20-23°C max's :thumbsup:
Lots to investigate around QLD, like Coal Mine Dust, Barrier Reef Dumps Plus traffic Jamms :rofl: :thumbsup: :thumbsup:

Thanks Bob!:thumbsup:

Been in Brisbane for two days now and the traffic is nuts !!!!!!:mad2::screwy::confused2::rol leyes:.

I presume the speed limits are a suggested guide line :shrug:.

Couldn't have picked a more noisy place to stay at the Oxley Motor Inn. Handy to Oxley Police Academy for my daughter Rebecca's graduation, but it's right next the Highway!!


Great effort Justin.
__________________
Cheers

Louie

Thanks Louie!:thumbsup:

Cheers,

Justin.

[astronobob]

Good comparison there Justin - betterra stars, yep, and I think the details in the bug itself are quite sharper, good suff :thumbsup:

Quote: I presume the speed limits are a suggested guide line :shrug:
Lol, thats Briz for ya - exciting joint hey ;)
Wait till ya get to the Gold Coast - if they go any slower, they'd meet themselves going backwards :P BTW its the lane markings that are the suggested guidlines here mate :eyepop: :rofl:
HavagoodN ,,,

[tilbrook@rbe.ne]

Thanks Bob!:thumbsup:

Out of the rat race now, up in Hervey Bay.:)
Hope to get some nice pics, and some night scapes.
Weather doesn't look to promising though.

Cheers,

Justin.