Tarantula Ha with High Pass Filter

[batema (Mark)]

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]

Nice Mark,I like the extra contrast.

[gregbradley]

A nice improvement.

Greg.

[desler]

Yep! Works for me.

Darren

[John Hothersall]

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

John.

[OzRob (Rob)]

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

[DavidTrap (David)]

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 (Mark)]

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 (Geoff)]

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

All you need now is that flattener

[OzRob (Rob)]

Originally Posted by batema

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

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]

Hi Mark,

Both photos look great. So much detail and sharp.

The High Pass versions is so dramatic.

Thanks.

Ross.

[RobF (Rob)]

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

[multiweb (Marc)]

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