N.A.N

This evening I managed to capture some images of the cosmos, in a brief gap in the clouds.

The North American Nebula to be precise!

This was taken with a recently acquired Pentax M 200mm f4 lens. It was on my K5ii and shot with a Cokin Clearsky LPF. It's 18 images stacked.

Questions - Guided exposures? Exposure time per image? F stop? ISO? My guess this is the full APS image size as it a large nebula.

I've used the K version of this lens wide open on bright comets unguided with nice results.

Cheers
Mike

Well done,

Mike.... Info as requested

The camera and lens were mounted on an unguided, but tracking Sky-Watcher Star Adventurer 2i Pro. The image is also cropped, it's roughly two thirds of the original image.

Exposure info - 18 x 60 secs, f4, iso1600

Stacked and stretched in Siril (free and highly recommended), then PP'd in PS.

What has really impressed me about this lens, is its really manageable CA wide open. Even before PP it was really good. Well worth investing in one of these for astro work.

I am planning more shots with it, and when I figure out how how to rig it with a guide scope and cam, it will be a guided session.

Nicely done again Spad

Thanks Spad, very impressed!

Cheers
Mike