rjhowell
Member
- Joined
- 6 Oct 2025
- Posts
- 19
- Location
- Denver, Colorado
Recent posts
- Predicting valley fog in autumn, what do you actually use?
That's about the hit rate you'd expect, because the surface forecast is the wrong thing to look at. What matters is the temperature profile. If the air at roughly 1,000 to 1,500m is warmer than the…
Post #5, in Landscape - First ever Milky Way, too noisy or am I being dramatic
Big difference from one round of stacking. Darker site next and you'll see another jump.
Post #7, in Showcase - Do I need a faster lens or just a darker sky? (Leeds, so: sky)
It's not the lens. Leeds is probably Bortle 7 or 8, which means skyglow is swamping the faint stuff no matter how fast your glass is. A faster lens just collects more orange, faster. Check a light…
Post #2, in Astro - First ever Milky Way, too noisy or am I being dramatic
A faster lens will help eventually, but don't spend money yet. At 18mm on APS-C the NPF rule puts you around 10-12 seconds for pinpoint stars, so at 20s you're getting trailing as well as noise, and…
Post #2, in Showcase - Eclipse report from near Teruel, it happened!! (long)
That's the one. Nicely done.
Post #14, in Showcase - Eclipse report from near Teruel, it happened!! (long)
Congratulations. Low-altitude totality is hard mode. Between the extra atmosphere and the wind you were never going to get razor-sharp brackets at 300mm, so don't beat yourself up about it. If you…
Post #4, in Showcase - 12 August eclipse in Spain: who is going and what are you bringing?
Congratulations, all of you. Marta, a softer corona through haze is exactly what I'd expect at that altitude, and getting prominences with the sun under ten degrees up is a genuinely good result…
Post #15, in Astro - X-S20 for the eclipse on 12 August, battery and power questions
Good plan. A few things from someone who has done two of these. First, check your horizon. In northern Spain the eclipse is in the evening with the sun quite low in the west, so make sure there's…
Post #2, in Fujifilm - 12 August eclipse in Spain: who is going and what are you bringing?
Not going (Colorado, and I did April 2024 from Texas), but a few numbers from that experience. Your 450mm-equivalent framing is about right. The corona extends a couple of solar diameters and you'll…
Post #2, in Astro - What did you shoot this weekend?
Pawnee Grasslands Saturday night. Waited for the moon to set and had the core clear from about 1am until the sky started going blue. Two hours of tracked frames on the 14mm. Happy.
Post #27, in Lounge