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BlockHead
About
- Username
- BlockHead
- Joined
- Visits
- 257
- Last Active
- Roles
- Member, Administrator
Comments
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In my case "auto" is my best choice because I tend to use the same master dark frame from many weeks if not months. The hot pixel population changes (in the raw/new data) over time scales like this. So "auto" identifies hot pixels by a statistical l…
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Regarding processed diffraction spikes...I am not a big fan. (I will spare you the soap box screed...) Yes the method of putting thread in front of the aperture... now that is perfectly fine (though refractor purists might cringe). Those spikes will…
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Thank you! I will be getting back to making more content soon. My other job has taken the front seat for a bit.-adam
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Hi Scott, I don't have much experience with cooled CMOS cameras- only processed a handful of data sets coming from these kinds of cameras. A couple of comments though... First, with a sufficiently large enough set of biases there shouldn't be a real…
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Ngc 6888 does have small details, but usually requires an oversampled image with very good signal. So platescales of less than 0.6”/pixel and a moderate light bucket. Even with the image I worked on the nebula really wasn’t bright enough to benefi…
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OK. I will send a note indicating the issue still persists.I both lowered the frame rate to 24fps as well as decremented the compression "quality" - halving the file sizes. I think it is the best I can do. I went ahead and did this adjustment for al…
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Hi Alan, I uploaded a new version of the LRGB video. It is produced at 24fps. https://www.adamblockstudios.com/articles/Fundamentals_LRGB Do you (or anyone else) see a difference in the playback? Thanks,Adam
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Hi John, For all images I have produced in the past 2? (maybe 1+ years), they have been done to the 97% level in Pixinsight. There are a few things that are special applications I have done outside of PI- but the answer to your question is yes I am …
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There may be something to this observation. I will be experimenting with the frame rate. It could be my frame rate is too high. I know I am pretty quick with the mouse... but likely I don't need super high frame rates for screen recordings. I haven…
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Hmmm... NB is a different creature as you mention in your other message. Typically what is done is to create a synthetic luminance (perhaps just out of the channel with the brightness signal- or a weighted blend of all of them) and then deconvolve t…
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Hi Sedat, The "auto" method of Cosmetic Correction is independent of image size (I think, I am writing this not looking at my computer). This is why I can get away with this. All I need to do is specify the sigma rejection parameters. If I were to u…
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Thanks for the response Alan. I understand where you are coming from...because I came from there!I do note, concerning a few of your points- that there are some sections you may not have yet reviewed that will inform some of your comments. I would l…
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This is a request I have received many times. I do plan on doing this. However, some caveats: 1. It isn't something I am expert in. After I complete more of the Fundamentals material, I will delve into OSC, Narrowband... etc.2. At the moment, I woul…
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15 minutes? Geez... Thanks Ladd. I would like to have some feedback (and hopefully some more positive) when members have gone through the material. I will still be uploading more in the coming days. I have already made some adjustments based on some…
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Just to follow up on the thread- as far as I know as of 6-22-2018- the site is back up and running (perhaps even more smoothly than before). -the Blockhead
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Hi Dean, The LN is, in my opinion, a little subtle. It is also a multi-step (though simple) process. So I decided to put this video in Horizons- however, I wasn't happy with the recording..I think I can do better. So I intend to re-record this. Than…
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Yes, sorry. Web support made an adjustment that apparently broke things. Hopefully will get everything fixed sorry.-adam
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Hi Robert, The little circle comes from your browser interpreting the video player's "loading" icon. It should disappear if your video is playing smoothly! (is your video playing smoothly?) So please try to seek to a future spot in the video and th…
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Thanks Carl. That is really good to hear. Like you, I was pretty much on my own (and talking to myself for hours... repeating myself at that) learning and trying to make this content. So it is good to hear the density of the material is reasonable …