Few Firsts and an image

[JCJC]

Yesterday I was very out of practise, setting up took an age!

This is my...

... first go with my newly modded 450D!

... first go with the new 7nm Ha filter from Santa!

... first 20min sub!

I realise the image is noisy and needs more time but it was good to make sure the kit was working as it should.

One interesting thing, I was using APT for camera control, if I had 3s anti-vibration turned on then the noise was awful. (example attached) I know it uses liveview to simulate mirror lockup but it made the images unusable. With it switched off the images are great. I guess this is normal, I don't need mirror lockup anyway, but useful to know.

Image details are on my blog Horizon Astro's Blog: IC1805 - Heart Nebula

Thanks for looking,

Jordan

[russ]

There's a lot of detail in that image and the tracking spot on. Great start.

[JCJC]

Thanks Russ, I was pleased with the star shapes.

[jgs001]

Now that has come out very nicely... Excellent result. The liveview forces the camera amp to be on, and that causes heating on the sensor which is what your seeing... amp glow. I found I didn't need mirror lock up either with my last couple of nights runs.

[yesyes]

Odd. I've been shooting for several hours last night using APT and my EOS 1000D and 3 sec anti vibration pause and none of my frames has any amp glow (or none that my untrained eye can see). Does this vary from camera to camera? Or did it help that we had -5 degrees outside? ;-)

[yesyes]

Oh, and gorgeous image of course!! ;-)

Lots of detail captured.

[ashworthacca]

I suffered with exactly the same amp glow until I bought a shutter release cable from Astronimiser.

Lovely image though and tracking looks great for 20 mins.

[Luke]

Congrats on the first, wow, cracking image, thanks for sharing.

[JCJC]

Cheers guys, all good to know.

[ollypenrice]

That really is a great result. 20 minutes and clean stars is a result and so is that level of Ha through a Bayer matrix. Double whammy! Very ipressive indeed. It is a stunning object, too. It always amazes me.

Olly

[Taff]

Nice one Jordan' great capture of the nebula.Mark

[peter shah]

20min sub my polar alignment isnt good enough....i keep saying ill sort it.

great shot

[Coco]

fantastic Ha image, the stars look superb also..

[JCJC]

Thanks everyone, comments very much appreciated.

Jordan

[themos]

Wow, I wonder what DSS reported as FWHM..

[JCJC]

The average FWHM for the two 20min subs was 3.23... not sure what is good/bad?

[themos]

Well, that is pretty impressive for 20mins, is it a tad smaller in the 10min one?

[JCJC]

Yes, not by much though. (3.17)

[harry page]

Hi

very impressive work with a 450 amazing it can be done

Harry

[JCJC]

Hi Harry,

thanks!... I guess the difference between cooled CCD and DSLR is more noticeable during summer.

Jordan

[MartinB]

Well done Jordan, that's come out superbly and great to have all the kit working so well

[astroimpulse]

Absolutely stunning. Can't wait to see you add more data.

BTW: if you're using just the USB cable with APT it simulates mirrorlock with the amp staying on. If you buy a serial to shutter release cable APT then uses the proper mirrorlock function Just remember to turn on mirrorlock on the camera and then there's no amp glow. I've only just learned this

[JCJC]

Cheers Martin and Sy, that is very useful to know thanks.

Jordan

[Sierra Golf Mike]

Jordan,

Great result considering all your "Firsts". Well done.

[MikeWilson]

Gorgeous image and thanks for the heads up on the amp glow. I thought the Canons were immune to this effect but it seems it could be down to the anti vibration lockup. I'll test it but will be sure not to lock the mirror up during my shots.