Search found 208 matches
- Thu Aug 19, 2021 12:48 pm
- Forum: Deep Sky Imaging
- Topic: central bright area...vignetting?
- Replies: 48
- Views: 7904
Re: central bright area...vignetting?
Brian, Not exactly sure why you’re suggesting taking indoor flats. I mentioned that visually, my flats looked even, i.e., nothing out of the ordinary compared to the many flats I’ve taken in the past. I guess what I’m saying is that unless I apply my flat to an actual image how else can I notice vig...
- Wed Aug 18, 2021 6:39 pm
- Forum: Deep Sky Imaging
- Topic: central bright area...vignetting?
- Replies: 48
- Views: 7904
Re: central bright area...vignetting?
Thanks Brian ( & Dave), I'm pretty sure my flat procedure is correct, i.e., a white tee shirt held taunt in place by the embroidery ring, which is placed over the dew shield. I have some layers of dark film (used in cars for sun protection) taped to my light panel...the lighting seems even on th...
- Tue Aug 17, 2021 11:50 am
- Forum: Deep Sky Imaging
- Topic: central bright area...vignetting?
- Replies: 48
- Views: 7904
Re: central bright area...vignetting?
Morning Brian, Since I haven't been able to get a cloud free night and the 10 day forecast looks horrible, let me at least describe my flats at f/2: 1. I have the hyperstar + ASI239 attached to the corrector plate of my OTA 2. I have the dew shield covering the above 3. I then place a white tee shir...
- Thu Aug 12, 2021 6:05 pm
- Forum: Deep Sky Imaging
- Topic: central bright area...vignetting?
- Replies: 48
- Views: 7904
Re: central bright area...vignetting?
Oops! I was using the wrong output format when capturing darks, everything's working now.
- Thu Aug 12, 2021 6:04 pm
- Forum: Deep Sky Imaging
- Topic: frames not being counted during dark captures
- Replies: 1
- Views: 380
Re: frames not being counted during dark captures
So sorry, I was using the wrong output format, everything's working now.
- Thu Aug 12, 2021 5:46 pm
- Forum: Deep Sky Imaging
- Topic: central bright area...vignetting?
- Replies: 48
- Views: 7904
Re: central bright area...vignetting?
Great advice.... I shall begin the experimenting Brian. I'll keep you posted. And yes, I always keep my gain at 120 for all Maybe you can help with this. I was just trying to re-do my dark library and something strange is going on. The frame count is not being registered at the bottom and the ETA ke...
- Thu Aug 12, 2021 5:40 pm
- Forum: Deep Sky Imaging
- Topic: frames not being counted during dark captures
- Replies: 1
- Views: 380
frames not being counted during dark captures
I'm trying to re-do my dark library and I just noticed that the frames (lower right) are not being counted as the capture goes on. It gives me an ETA, but no frame count. Is this a problem?
Thanks,
Joe
Thanks,
Joe
- Thu Aug 12, 2021 3:22 pm
- Forum: Deep Sky Imaging
- Topic: Taking dark-flats with Hyperstar
- Replies: 3
- Views: 532
Re: Taking dark-flats with Hyperstar
Celkins,
Sorry, I misinterpreted your response...yes, I do have a filter in the train! You are right! I'll do that.
Much thanks!!
Joe
Sorry, I misinterpreted your response...yes, I do have a filter in the train! You are right! I'll do that.
Much thanks!!
Joe
- Thu Aug 12, 2021 12:25 pm
- Forum: Deep Sky Imaging
- Topic: central bright area...vignetting?
- Replies: 48
- Views: 7904
Re: central bright area...vignetting?
Brian, Thanks once again for doing all this. I've always suspected it was my flats and/or dark-flat subtraction. I do, however, have a dark library, perhaps it's time to re-do the dark library). As for flats...my work flow is to get a test flat to ascertain the exposure and gain for making a dark-fl...
- Thu Aug 12, 2021 1:40 am
- Forum: Deep Sky Imaging
- Topic: central bright area...vignetting?
- Replies: 48
- Views: 7904
Re: central bright area...vignetting?
Tried again tonight to send the folder...thanks for hanging in there with me on this Brian.