Two stars; perplexed I am

[Atmos]

I've been working on the Horsehead nebula recently and I was flicking through data taken a month ago and another set taken over the last few days and noticed a new star and a brightening star.

In the first two images you can see there is a star that didn't exist a month ago but does now. It's in the same position on Sunday night and Tuesday night so it isn't a transient object. If I stack last months images and this months it does become more apparent. There is also another star near the bright star in the SE corner than has a brightening and dimming star. It is apparent over a month long period but doesn't change over several days.

The next two show a star that has a significant brightness change. This star along with another one I found may be a Cepheid Variable. I haven't followed up on this particular star but I found another one not shown here that doesn't change over the course of a night but does over two. It shows virtually no change from Nov 27th to Dec 22nd but a brightness difference from Dec 22nd to Dec 24th.

I may have to revisit this region another night to see if there are any other developments!

[Merlin66]

Colin,
Have you plate solved the images?
Simbad should be able to tell you whether or not these stars are variables or...

[Tropo-Bob]

Sorry Colin, I can not relate the first 2 images to the next 2 images. Can U help me to comprehend?

[Merlin66]

Bob,
I think they are separate fields in the same area - no relationship.

[multiweb]

In the first two shots I have that missing star in mine taken a couple of years ago.

[Tropo-Bob]

Thanks Ken. I finally found the stars.

Well done Colin. Even though I was told, it took me a long time to find what U had found for yourself.