the process of combining multiple exposures to increase sharpness, reduce noise or for special effects, e.g. star trails
6
votes
2answers
123 views
Deep Sky Photography with telescope without Tracking
I tried photographing moon and Saturn with a 8'' Dobsonian (without tracking). And it was a breeze. But I had to follow the '600 rule', i.e I only exposed it for less than (600/f) sec ~ 1/2 sec.
But ...
4
votes
1answer
160 views
How can I align two panoramic images?
I have two panoramas, which are already stitched. They were taken four years apart, of the same town from the same location. I want to align them and show them side by side, so that the viewer can ...
2
votes
3answers
178 views
Can I get longer than 15 second exposure with my canon SX 50?
I am new to photography and I was hoping to go take some pictures of star trails this weekend. I just bought this camera this week and I realized that the highest shutter speed is 15 seconds. Is there ...
4
votes
1answer
129 views
Where can I find or make a script for focus stacking using Raynox DCR 250?
I am looking for a script for focus stacking with Raynox DCR 250. There is already default script there but it is linear and that is better suited to stock lenses and, with the Raynox 250 attached, I ...
9
votes
4answers
908 views
Can stacking multiple exposure images in post-processing give the same effect as a long exposure?
I like to shoot daytime long exposures, where the exposure time is around two minutes. That shows the motion of the clouds in daylight.
I used a Hoya nd400 (which is 9 stops) stacked together with a ...
17
votes
6answers
970 views
ND Filter not Dense enough - How do I get long exposures in very bright situations, where my ND filter isn't enough?
What is the best way to achieve very long exposures in very bright, sunlit conditions?
Right now, I have a Hoya ND-400 X filter (9 stops reduction), and even with my camera set to ISO 50, and F22, my ...
5
votes
5answers
302 views
What is it called when multiple photos are adjusted for further blending?
I have taken a series of noisy photos without a tripod.
I want one less noisy version, so I need average them down to one photo.
But details of the individual images do not exactly match, so that ...
7
votes
3answers
2k views
Best opensource/ free stacking software for mac for astrophotography
I am using snow leopard and mainly want it to automate the stacking as much as possible. I have seen that PixInSight looks pretty awesome, but that's not free, in-fact far from it, so I want something ...
13
votes
4answers
2k views
How can I simulate a long exposure photo using a set of shorter exposure photos?
I'm shooting towards the sky to capture the stars. The exposure time is 15 seconds, so I can see the stars still, without a trace. These photos are taken continuously one after the other, because I ...
