HORSEHEAD AND FLAME NEBULA , TEST SHOT

[CELESCOPE]

Stayed up late last night , took a couple of images , never went out till after 10 , first image i gathered some light on to the chip somehow so not a good one of IC63 nebula , so wont put that one up , but thought i would have a trial run at the horsehead, not the best orientation i like , but was getting tired and the wind blowing a gale as well , so guess i was lucky to get this one , subs used were 39 at 60 secs , HA filter , ED 80 for the wide field using the reducer to F5, processed in Maxim , manual combining , hopefully i want to do a really lovely colour one of this , just need the weather ,

Cheers

Rog

[FLO]

Test Shot :shock:

[Jamie]

Up to your usual standard Rog.

Test shot my .................. "no no don't say it"

[geppetto]

That'll keep us going till you get the colour one Rog

Nice one

[CELESCOPE]

But but ,it was ,honest ,see its not to my liking at that angle , so next time i know to get the ole camera in a better position , the image other than that i,m happy with , so in terms of a test shot it tells me what to do next time ,

Rog

[richard42]

that is a great image !

does the ha filter make a big difference?

[CELESCOPE]

certainly does Richard , i use it all the time , for reflection nebula i use just a plain lum filter and a blue filter , Galaxies i use the CLS filter

Ha i use for all emission nebula

[Caz]

but was getting tired and the wind blowing a gale as well , so guess i was lucky to get this one

...and you still produce fantastic results!!

8)

Caz

[Gordon G]

That aint' no test shot

stunning

Gordon

[Kain]

WOW!

Rog has taken a photo of something I have actually seen (Flame Nebula)

Test shots? Yeah pull the other one Rog, it's a fantastic shot.

Kain

[CELESCOPE]

well u one up on me there Kain , i must look through the eyepiece sometime would love to see that as well , although the HH does look good live on the screen i must admit .

Rog

[Martin 2]

thats a stunning "test shot " Rog

M2

[moondog]

Rog, when are you going to stop mucking about and produce some proper images ?

Test shot indeed !!

:D

MD

[Saso]

This is a test shot? What do you do when you shot for real?

Saso

[richard42]

thanks rog i'll bare that in mind next time i go shopping

but bit of a neabie question what is a lum filter :?

[CELESCOPE]

Hi Richard

A luminance filter typically blocks UV and IR light, passing only the same wavelengths as the RGB filters. A clear filter does not block UV or IR but is used for maximum signal transmission over the full range of the CCD. for all my emission nebulas i use the HA as the main luminance , then use red blue green for the colour, final image is to combine the colour data , and transfer that colour data onto the luminance image as this has the quality data in it ,

Relection nebula with the CCD i use the clear filter for lum and also the blue filter then combine the two , it works ok as seen in my Iris nebula here

Cheers

Rog

[richard42]

ok i see, thanks!

next question which nebular are reflection and which are emission?

sorry for the newbie questions

[Astroman]

Nebulae such as M42, the Orion nebula are emission. Nebula such as Merope around M45 are reflection.

[GazOC]

Astroman, I thought there was now some doubt whether that nebula is around the stars in M45 or just a line of sight effect?

[Astroman]

There is a certain amount of disagreement as to the distance from the dust to Merope, but the nebula reflects the same spectrum as Merope, so whether or not it's around or enveloping the star, it is nonetheless reflecting Merope's light.

[GazOC]

Cheers AM. I just wasn't sure it was 'around' the star, I'v seen from a few sources recently that it may not be but not why opinion has changed on the subject?

[Astroman]

I'm not sure opinion has changed. As I recall this discussion's been going on for some time-decades? It's similar to the discussion of the planetary nebula in (front of/behind) M46, Ngc 2438. It's fairly agreed the dust came from the formation of the cluster, but its distance is in doubt. Usually, if astronomers come within a factor 5, they feel pretty good.