Lyle Aldridge

Nice work, Wayne. Given the temps we've been experiencing lately, I'm really impressed by how little noise I see. None of my cameras would come close to that. Looking at the date and time in your ...

Tim, I saw your post, and started a response, when it occurred to me that you could be my nephew from California. He's a very smart guy, but Astro-imaging is an interest I didn't know we shared. An ...

Impressive image! It displays a lot of skill on your part, as well as the advantages of nice optics and a cooled camera. And lots of time on target. Well done. For those of use living in the desert ...

Color aside, Wayne, I like these. Despite living somewhat close by (Tucson) for over 50 years, I don't think I've ever been to the north side of the lake, and certainly never recognized the ...

To me, this is a call between a slightly older (2010) DSLR with more aperture and almost 4X larger sensor vs a newer (2016) bridge camera with a smaller but possibly more advanced sensor. The ...

Peter, it looks like you've done it, by Jove! Now show us the Great Red Spot. :-D Visual observers have a jocular term, "averted imagination," and for a while, I wondered if we might be seeing the ...

In the Coolpix forum, there have been a few discussions that you might want to read on this subject. This post starts with what may be the best effort I've seen with a bridge camera, and the EXIF ...

Welcome to the forum.  But, wow, that is really broad question, using terms that mean different things to different people. For example, even the term "astrophotography" can mean anything from a ...

You need to distinguish between the image and the mask. The image can have lots of color. But no matter how much color is in the image, or what colors they are, the image copied to the layer mask ...

Definitely an interesting image, with technical skills evident in the making. Even though I'm not generally eager to comment on color, however, I do think the turquoise sky would feel more ...

The method I described doesn't use any selection tools. Instead, the "selection" is done by the layer mask, which contains an exact positive or negative monochrome copy of the main image.  Where ...

I rate this one "astounding!" I think globular clusters are fascinating, but often find images of them to be kind of boring. Can't say that about this one. Getting that kind of resolution from ...

Have you tried using the inverted image itself as a layer mask? GIMP and Photoshop both have this capability. I don't do much wide-field imaging of entire constellations, but I've found this ...

Yes, but... Remember, the original question asked about the purpose of stacking, not the effects . As already stated, the purpose of stacking is to reduce the random noise by having its random ...

Greg, thanks for sharing this image. Nice round stars! There is "walking" noise (which I know all too well), but even that means good tracking. Nice color in the spiral, too, and even in the ...

I also don't have great familiarity with your scope. But the f/6.3 focal reducer you've identified is designed for Schmidt-Cassegrain optics, rather than the Maksutov optics of the ETX, and it ...

Despite your prior usage, I think this IS the lens. What we're seeing looks to me like tangential astigmatism. You're seeing it only at the top because there are no stars at the bottom, and stars ...

Thanks for responding. I'm still wondering, though, whether you're using the OTG adapter on a tablet, or on a phone. The OP was a question about using a tablet for focus, but it morphed into ...

Just for clarification, are you referring to use on a tablet?

Beautiful work, Rudy! Is that just skyglow and LP illuminating the foreground?