Category Archives: Pictures

December 2017: Sharpless 2-240

This is a HUGE object. So it doesn’t fit into my FOV and would need a mosaic. Maybe I’ll try the mosaic, but I’ll need a moonless night to avoid gradients (which easily spoil the mosaic work).

For this image, I used H-alpha to overcome the moonlight, As it is also a weak object, I exposed 1,000-second subs. Then I took some RBG subs just to color the final image. I processed using the synthetic-R method.

Sharpless 240 signedGo to this object description and this image technical detail.

 

December 2017: Rosette revisited

This time with long H-alpha exposures. Tne Moon was almost full, but the H-alpha filter worked excepcionally well, showing little gradient.

I tested 1,000-second long exposures, instead of the 600’s that I was used to. It worked ok, with a very good guiding done by the DSI Pro.

This is the final H-alpha image (stacking of 6):

Rosette H-alpha signed

I combined this image with old RGB subs taken a year ago and that had too much noise. Teh result, I think, is wonderful (I used the H-alpha as a R component).

Rosette HGB (6X100, 4X300) signed

Go to this object description and this image technical detail.

 

August 2016: North America & Pelican in H-alpha

The Moon was shining powerful, almost full. Time to take a break? Nop! With the H-alpha filter high-quality pictures can be obtained regardless of the moonlight.

So I pointed at the NorthAmerica Nebula, and tried to frame also the Pelican.

North America Halfa signed

It’s amazing how much detail can be achieved with long exposures of the H-alpha filter.

As a curiosity, a satellite happened to cross the field while I was imaging. It was recorded in the first frame:

north america with satellite

After some investigation, taking into account the precise timing of the event, I identified the invader as NEE-02 KRYSAOR, launched in 2013 and belonging to Ecuador:

north america with satellite slide

Go to this object description and this image technical detail.

August 2016: Stellar nurseries

The Lagoon and the Trifid are some of the most visited objects in the summer sky. Favorite targets for astrophotographers, I had previously imaged them with my 8″ LX200 and the QSI. The Trifid was perfect for my photographic field, but the Laggon required a 2-frame mosaic to fit inside it.

With the new setup (the 80mm TS refractor and the QSI) both objects fit perfectly inside the field!

M8 and M20 signed

This is a cropped version of the image:

M8 and M20 cropped signed

Go to this object description and this image technical detail.

August 2016: … and now, the Eastern part

Yes, while testing my new equipment I imaged the Eastern Veil, one of my favorite objects in the summer sky.

With my “traditional” setup (the 8″ LX200), this object needed a 3-piece mosaic to be framed inside the field. But now, with the 80mm TS refractor and its huge photographic field, the Veil simply floats in the middle of the frame surrounded with thousands of Milky Way stars.

Veil east signed

This is a cropped version of the image:

Veil east cropped signed

Go to this object description and this image technical detail.