Tarantula Ha with High Pass Filter [Archive]

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batema

07-09-2011, 03:55 PM

I have applied the high pass filter from photoshop to my original image posted a couple of days ago. The one on the left is the original. The right one is the high pass filter image. Comments welcome.

Mark

atalas

07-09-2011, 04:00 PM

Nice Mark,I like the extra contrast.

gregbradley

07-09-2011, 06:22 PM

A nice improvement.

Greg.

desler

07-09-2011, 06:43 PM

Yep! Works for me.

Darren

John Hothersall

07-09-2011, 07:43 PM

Detail jumps out as does the increased contrast HighPass gives, structure excellent in both images.

John.

OzRob

07-09-2011, 07:55 PM

That is a nice improvement. I might have to give it a go on some of my images.

DavidTrap

07-09-2011, 08:09 PM

The detail is certainly improved. What scope did you use? It looks blurry in the top right corner. I had a similar problem with my scope and it seems to have been a loose focuser.

DT

batema

07-09-2011, 08:27 PM

Thanks all. The scope was a William Optics Flt 110 with a QHY-9. I don't have a field flattener so that may help in future. I am going to run 15 minute darks for this image but have not done so yet. It is three hours of 15 minute shots. I need to make sure I take flats and bias flats as well as darks. Next time.

Mark

ozstronomer

07-09-2011, 08:32 PM

Well done Mark, both shots look great. The High pass filter certainly gives it a boost.

All you need now is that flattener :D

OzRob

07-09-2011, 08:35 PM

It's not too late to do the darks and bias frames. They don't change that much. I use a master dark and bias for about 3 months before retaking them.

With my setup (same as yours) I have found that any dust on the filters make little if any different to the flats. I can get away with using a single flat until I clean the camera. I have a 20mm spacer between the camera and filter wheel. Not having that spacer may make a difference.

Ross G

07-09-2011, 09:21 PM

Hi Mark,

Both photos look great. So much detail and sharp.

The High Pass versions is so dramatic.

Thanks.

Ross.

RobF

07-09-2011, 10:05 PM

Looks great Mark, but then I loved the original too. Perhaps somewhere in between? (not too hot, not too cold....:D)

multiweb

08-09-2011, 08:59 AM

Nicely done. Gotta love the Highpass filter when well applied. Top shot. :thumbsup: