Time passes by

[farmboy]

This picture was shot a ISO 800 bulb f/5.0 left the shutter open for an hour. It was over exposed and here's is my attempt at trying to save it . Previous pictures were shot with lower iso and different aperatures. but the lower the iso is seems the more hot pixels I get. any suggestions. comment, critizisms, and edits. welcome.

[Harold_L]

I like the red windmill version - a good save. From an amateur astronomer's point of view, the number of stars recorded in the first image is amazing. What lens and camera did you use?

Harold

[sparker1]

The second makes an interesting abstract.

[farmboy]

Thanks Harold, I used a 300D with the 18-55 mm EF-S kit lens.

[ChP]

That is a very cool image. An excellent save. I've done some star trails with a 300D and the kit lens. Shooting star trails with the 300D is a difficult task because noise gets out of hand.

What did you do to reduce the amount of noise in these images? A one hour exposure should have produced a much noisier image.

[farmboy]

I have no clue. Here's the same shot with ISO 100 and 20 min exposure. This tends to cause more hot pixels with lower ISO. ?

[jopfin]

Very cool! like that second pic.................Joe

[Carzee]

The second abstract one is my fav too. Nice angles.