Bicolour Crab

[Ken]

Hi folks I imaged this while the moon was up with the 18" newt, the seeing was only average but overall it is better than my previous efforts on M1.
QHY9 with Baader c/c Ha 29 x 4 min, O111 18 x 4 min. thanks for looking.
Clear skies Ken.

[TrevorW]

Ken nice shot hope you don't mind I touched it up a bit as had a bit of a green tinge in the background (per my monitor)

[CoolhandJo (Paul)]

Nice definition there Ken!

[multiweb (Marc)]

Looks great Ken. Nice processing - very natural.

[Tilt (Michael)]

Spectacular detail Ken! Very nice The 18" newt is playing nice it seems.

Michael

[Lester]

Very nice detail in the crab, thanks for the view Ken.

[Prickly]

Superb Ken.

Tons of detail and nice star images.

I presume you are coming to SPSP?

Cheers
David

[tonybarry (Tony)]

Hello Ken,

That is a very good rendition of the Crab Nebula. Thanks for posting it.

Regards,
Tony Barry

[Ken]

Not a bad a repo Trevor the background is darker and less green, M1 though looks a little harsh to my eyes on my little laptop screen. Thanks for the reply Dr Paul and Marc not sure what natural is any more when using nb filters I just used average on the Ha and O111 to create the third channel which I think I used as the green channel. Michael the 18" is playing up again in the tracking I had to throw away 60% of the subs with egg stars, although the tube is going to weight watchers or the tip. Actually I am building a aluminium truss design hoping to save about 15 kg? it will also sport a larger secondary mirror allowing better use of a oag and give the guide scope the flick. Thanks also Tony and Lester and David yes looking forward to spsp, Ian and Enrique said they are coming.
Clear skies Ken

[Paul Haese]

Nice image Ken. Heaps of detail in the crab. I would love to image this target but my obs roof rolls out to the north, this is because the rain at Clayton travels in a horizontal direction. Most other places if falls vertically.

Lovely image.

[Tilt (Michael)]

Originally Posted by Ken

Michael the 18" is playing up again in the tracking I had to throw away 60% of the subs with egg stars, although the tube is going to weight watchers or the tip. Actually I am building a aluminium truss design hoping to save about 15 kg? it will also sport a larger secondary mirror allowing better use of a oag and give the guide scope the flick.

60% throw away!! Geepers Ken, I must agree, the new truss design might just be the ticket. The larger secondary will be good too, Im more than likely not going to bother modifying my GSO 10" as the illuminated circle would be sad, certainly not enough for a 350D sensor. Tube cutting, new seconday, etc, it all just gets too complex for me

Michael

[alan meehan (Alan)]

Damn nice shot Ken well done

[iceman (Mike)]

Excellent result Ken, one of the better shots I've seen of this neb!

[Ken]

Hi Paul I am lucky to have very dark skies to the north so I like to take advantage of this by having a half wall that is hinged to drop down, also have a split in two sliding roof that can slide east or west, might give you some ideas. Michael I think these large sensor cameras really test most off the shelf scopes, a large fully illuminated flat field at a affordable price is the holly grail. Even taking flat frames seem to be of limited benefit when you start really stretching the data if you have bad vignetting. Thanks for the encouragement Alan and Iceman.
Clear skies Ken.

[Tilt (Michael)]

Originally Posted by Ken

Michael I think these large sensor cameras really test most off the shelf scopes, a large fully illuminated flat field at a affordable price is the holly grail.

So very true. I suppose I'll have to look at the Orion 190 Mak-Newt or Vixen VC200L