Hi Denise.
I have a Nissin Di622 ii flash which is basically the same as my Canon 580EX ii flashes & was about 1/4 the price of the Canon. The Nissin is Nikon dedicated & has low light assist TTL feature. Well worth considering if you are thinking of getting a new flash.
I have found SD cards are the most prone to corruption of all the memory cards that I have used, but I don’t know why this is the case. Sometimes if you de-fragment the card it will allow you to restore the photos without the use of data recovery software. I have used a software in the past called Photorecovery LE and it recovered every deleted photo from the card (SD) even though it had been formatted several times. I’m sure there are other software out there that could do the same. Best of luck.
Great image Helen. The composition is lovely. Good round stars & nice mix of lighting at the horizon. The light painting of the foreground is nicely done, but I might have used a tad less to give it a more natural (to my eye) look. I also like the galaxy (top of image), nice detail. Good to see the Burren still has little or no light pollution. Well done
I use an AstroTrac mount, which works pretty well if properly aligned & is not overloaded. It is more portable than a proper telescope mount, but it won’t support a heavy telescope / camera setup. I usually end up with a small bit of drift between shots, but I use software to correct any alignment errors. Having small differences can actually help to eliminate sensor noise & hot or dead pixels.
Hi Weeman.
It is in the Southern part of the Milky way. It’s an open cluster which is approx 6’500 light years away, which makes it appear as a fuzzy star to the naked eye. This was a 20 minute exposure (40×30 sec) blended together. I may have gone a bit overboard with the processing, but I wanted the cluster to stand out from the background of thousands of other stars. :)
If the same issue is with all lenses, then it looks like a sensor alignment problem or possibly a smear on the sensor from cleaning fluid / fingerprint etc.
Are you shooting with Autofocus active? The camera could be “searching” for acceptable focus between shots. Also check which focus points are active. You might have it set to focus points which are off center.