Garabaldi15

On 19/04/2021 at 08:12, JSeaman said:

I have only had a play with the JPG quickly so you can definitely do more but this is with a bit of sharpening, a despeckle, convert to B&W to remove colour artefacts, shadows/highlights to bring out a bit more of the shadow, crop to suit

Stacking a bunch of short images can help even with the moon, assuming you are using a tripod then it shouldn't be vibration at those shutter speeds. Personally I would be keeping the ISO at 100 or 200 for noise control, you should be able to go up as high as f/11 with that normally. 

 

The viewfinder image is smaller which always looks better, you can hopefully see that in the below:

Thank you, it does look much improved.

I’ll try taking a few multi shots and stacking them to see how it compares!

5 hours ago, rickwayne said:

Nothing obvious springs to mind. You could overexpose and look for stars in the image, see if they're soft or jump-around lines, might help you see if it's vibration or something else. You could also try using much higher ISOs to enable very short exposure times.

Another dodge would be to try it with a terrestrial object during the day, when you  can use super-fast shutter speeds even at lower ISOs, and really nail the focus.

Finally, you could make or purchase a  Bahtinov mask and use it to get stars absolutely spot-on focused, and work from there.

Thank you for the suggestions I’ll certainly try a higher iso and look at getting it out during the day. 
I’ve not used a Bahtinov before but will take a look.

thanks,

chris

4 hours ago, Davey-T said:

Hi and welcome to SGL.

Just looks out of focus, does your camera have mirror lock facility.

Dave

Hi Dave,

it does but only for cleaning you can’t take photos with the mirror lock on unfortunately.

Thanks

DSC_1932.NEFHi All,

I'm hoping to find someone who might be able to help with an issue with all my images coming out blurry.

As a little background I've recently purchased a Celestron 5SE scope in the hope to image some brighter objects (i.e. moon, orion nebula, other solar planets etc). I already own a Nikon D3100 camera and I bought a 2" adaptor and t-ring to attach the camera to the scope as a prime lens.

I've played around for about 10 nights now looking at different camera settings and different objects and have yet to get an image that is sharp. I can focus the image through the view finder/live image option on the camera and it looks sharp even when zooming in but after taking the image it's always blurry. I've attached an example image; it's probably a little under exposed.

In terms of settings on the D3100 I've tried ISO 100/200 (and some others to experiment) and various exposures between 1/250 and 1/50. I have also tried bulb with a black card but I can't swing it out of the way and back again quick enough to not just get an exceptionally over exposed photo (I tried this thinking the issue maybe vibration). I've also tried using multishot to capture 10-20 issues at one time to reduce vibration. I've also tried a remote shutter to avoid touching the camera.

Are there any obvious suggestions of what I could be doing wrong to not get the sharp image that appears in the viewfinder?

Thanks in advance!

DSC_1932.NEF