Orion with 4 sec subs

[fwm891]

Just a stack of some frames shot this morning (72 x 4 sec) f2.8 1600 iso Canon 450D modified. Just for fun

Staked in DSS and processed in PS CS3. Camera on static tripod.

[Digz]

Very noisy as you would expect but a great shot nevertheless as it is great at demonstrating what can be done without a tracking mount and telescope and short exposures.

[fwm891]

Thanks Lee, I woke early this morning, looked out and just grabbed my camera with a 50 mm lens, plonked it on a tripod and connected up my laptop with EOS Utilities. Tried a few different exposures and just decided that 4 sec showed no real signs of trailing and started a sequence going. I shot 80 but rejected a few due to a satellite crossing the frame.

[Digz]

Good motivation and a worthwhile experiment

[fwm891]

Will definitely remember to do this again. May even (if allowed) keep a camera and tripod 'handy' just for this type of shot.

[Digz]

Sounds like a plan!

[JamesF]

There's a huge amount of nebulosity around Orion if I recall correctly. Nice to see you're starting to pick it up there even with such short exposures.

James

[bazlan]

Nice

[fwm891]

Sounds like a plan!

Plans usually have some hope of success

There's a huge amount of nebulosity around Orion if I recall correctly. Nice to see you're starting to pick it up there even with such short exposures.

James

Yes James - lots. Need longer exposures to do it more justice, for that I'd need some guiding or a barn door mount...

Nice

Thanks bazian.

[iksose7]

Amazing result seeing as you had no tracking! Think i will have to try this out if i can pull myself out of bed. I take it you manually adjusted the camera every now and then or did you just leave it?

[fwm891]

I just left it to run. Started with Orion fairly close to the left of frame and stopped when it got to a similar position on the right. You can see the vertical edges fade off that where I lost data due to the motion during the exposures as Orion tracked across.

[nytecam]

Great image and thanks for posting - a litle noisy but amazing for brief subs - the Barnard's Loop is there faintly - a lesson for us all ;-)

[laser_jock99]

Good shot- at that focal length you might have got away with 10s shots?

[LukeSkywatcher]

Love it. It just goes to show what can be done with a camera on a fixed tripod. I really do need to buy one of those auto shutter cable things so i can program it to keep firing at will. I have a cheaper manual release cable for my cam.

[fwm891]

Thanks all

[mtbdudex]

Hi Francis, looks like we think similiar.

I did these 2 years ago....

Taken Oct 17, 2010, 500 (2) sec exposures @ ISO800, 40 darks, 25 bias, shot via T1i+50mm f1.4 prime lens on tripod.

DSS took quite a while to crunch this.

Not much PP here; adj levels, added some saturation/vibrancy.

Full output:

Crop1

Crop2 of M42

I also wanted to tryout the 15-85 lens to see how it would perform on Orion/M42, taken same morning immediately after the 50mm lens shots (each had their own darks/bias frames of course)

Taken Oct 19, 2010 5:30am - 5:56am EDT, 256 (5) sec exposures (21.3 min total exposure time) @ ISO800, 33 darks, 25 bias, shot via T1i + Canon 15-85 Lens @ 85mm, f5.6 on tripod.

Full output:

Crop1

Crop2 of M42 1024 pix wide with 85mm lens (slight star movement seen here in tight crop)

Sweet, no purple fringing here! Very clear as well.

[mtbdudex]

Being curious to the performance of the Canon 50mm f1.4 prime versus the Canon 15-85 lens @ 85mm, here is comparison:

Crop2 of M42 with 50mm lens @ 1024 wide, DSS stack of 5 sec exposure, 17min total

to this Crop2 of M42 scaled 85/50 (1740 pix wide displayed 1024 wide), with 85mm lens (to give same scale)

DSS stack of 5 sec exposure, 21min total

Clearly the 15-85 has much better optics!

I am surprised, having read a prime is better than a zoom.

Remember these are taken same night, I took the 50mm first then the 15-85 second, immediately after.

For now I'll use the 15-85mm @85mm, clearly it is the optic champ and shows colors more accurately.

[fwm891]

Nice shots - I didn't take any darks or bias frames, it really was just a 'what will I get' job.

Will try again on other areas of the sky at some stage but the weather is closing in for a while now so its back to building the observatory.

[Ags]

Just a stack of some frames shot this morning (72 x 4 sec) f2.8 1600 iso Canon 450D modified. Just for fun

Staked in DSS and processed in PS CS3. Camera on static tripod.

Is that a hint of Barnard's Loop I can see, or am I imagining it?

[fwm891]

Hi Agnes, Yes I think its beginning to show. Makes me want to try with a guided camera and longer subs to see what else is in the area.

I've made an adapter for my Atik 383L+ to take standard camera lenses so I'll be trying to get some Ha at some stage...

[Ags]

So you picked up some faint nebulosity with 4 second subs. Thats pretty incredible.

My camera is not modded so I should manage to pick up something after 12 seconds :-)

[pwalsh61]

Interesting! May try similar with my f/1.8 50mm

Sent from my GT-I9100P using Tapatalk 2

[LukeSkywatcher]

Just got my camera back from my nephew. Cant wait to get out and give this a go. I'll also try for the Rosette.

[fwm891]

Paul, You should pick-up the Rosette fairly easily.

Good luck all

[symesie04]

I am very impressed with just 4 sec subs, modded or not. So given it was a 450d and using the nifty fifty you were actually shooting at 80mm then? Just out of interest do you think you could of squeezed slightly longer subs at that focul length on a static?