VdB142-Elephant's Trunk and NGC6888-Crescent Nebula

[roberto_volpi]

Hello.
Two new h-alpha images captured this week from my suburbane site, despite full moon.

Vdb142 15x20' bin1
Ngc6888 13x20' bin1

Baader Planetarium 7nm Ha filter
AstroProfessional Apo Triplet 115/800
Sbig ST2000XM
SkyWatcher Eq6 Pro mount

[Nocturnal]

Very nice!

[roberto_volpi]

Thank you very much Nocturnal.
Roberto

[dico]

Nice shot!, congratulations!

[roberto_volpi]

Thank you Dico
Roberto

[Lex]

Hi,

Wow that's some nice clear Pics; congrats!!

Best

Lex

[roberto_volpi]

Thank you Lex.
Roberto

[Lex]

Hehe, you are welcome 

Could you please give me more details about your imaging techniques; I own a CGEM and I am experiencing heavy headaches with it...

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1. Is your mount tuned?
2. What about your autoguiding? Is the guider integrated in your imager cam?

I saw that there were exposures used of 20'; thats not imaginable for me, even with PEC and guiding 

Thanks!!!

Lex

[roberto_volpi]

Hi Lex
I Haven't special technique to make exposures of 20' or more, my mount is a standard commercial Eq6, without modifications.
It's important to pay attention to details as mount stationament, set-up balance, strong focuser (avoiding banding)
Sbig ST2000XM is a dual-chip camera, often I guide with internal chip (absolutely when I use VMC200L F1950mm as scope), but not in this case.
With H-alpha and other narrowband filters, sometime, it's difficult to find a guide star and so, with this refractor of F800mm only, I also use an external guide system, other small refractor (62/520) not shiftable and Atik 320E as guide ccd.
As software for capture and guide Maxim DL5
I'm sorry for my bad english.
Roberto

[Lex]

Roberto,

you do not have to be sorry for your english because I understood everything you told me 
I thank you for your answer! I am kind of disapointed of my setup because it is not stable at all, sometimes it works just like it should and sometimes nothing work like it should...

Some kind of X-Files in here 

Cheers

Lex