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Have people had luck with these low-cost alt-az goto mounts for astrophotography? My experience with them is that their siderial tracking modes are meant just to keep an object centered in the field for viewing, so it doesn't drift, and that they do their adjustment in pulses which is useless for ex...
by bradtem
Thu Sep 16, 2010 8:32 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: New Merlin Synscan AZ Goto User
Replies: 35
Views: 18630

Alas, wine only runs 32 bit windows programs so while I could run it on wine (or use my 32 bit windows systems though they don't have my 4 megapixel 30 inch monitor) it would be much more memory limited. I am already running into a lot of problems using APP on my 8gb system and looking to upgrade it...
by bradtem
Sat Jul 17, 2010 3:03 am
 
Forum: Autopano 2.5 and older
Topic: Autopano Engine v2.5 Alpha 1 changelog
Replies: 32
Views: 21613

I shoot panos with many lenses. The most common is my 50mm prime, but I also like my 24mm prime. Sometimes I put on my 24-105mm, either to get the other lengths (such as 105) and sometimes I put it on because it is all I am carrying -- it is my walk-around and travel lens. Then there is my 70-200 wh...
by bradtem
Sun Jul 04, 2010 7:22 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: Dream wishlist for tethered shooting
Replies: 20
Views: 4391

Well, I did just realize a problem with my initial feeling that the ideal method is not even to take a test shot, but just to look at the first shot and figure things out. Of course, after taking that shot you may learn that the focal length is quite different and you will be taking more or fewer sh...
by bradtem
Sat Jul 03, 2010 9:47 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: Dream wishlist for tethered shooting
Replies: 20
Views: 4391

I do understand that there could be a lot of work refining the APIs for the plugin. I am making the suggestion that when time next becomes available to work on this area, you might be able to get away with some lesser amount of work and count on owners of individual cameras to do some of it. In part...
by bradtem
Sat Jul 03, 2010 6:19 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: Dream wishlist for tethered shooting
Replies: 20
Views: 4391

I do understand the lack of development time. However, there is an easy way to get to this stage, which I outline to some degree. Namely, the idea that all PPW does is trigger that initial shot and download of the EXIF. After downloading the EXIF and extracting the camera type value from it, it woul...
by bradtem
Sat Jul 03, 2010 5:41 am
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: Dream wishlist for tethered shooting
Replies: 20
Views: 4391

Another note: Many tiny USB hubs have a very small barrel connector jack for putting in 5v power. And it's also not hard to find cables that go from usb to that barrel connector, which you can plug into the typical cigarette lighter usb power sources, or rather the guts of one if you take it apart a...
by bradtem
Fri Jun 25, 2010 10:05 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: gphoto2 and bracketed exposure short intro
Replies: 133
Views: 62349

A bit pricey, the Pandora. So that leaves you with the powered hub (on devices that can even get to usb host mode) or other tricks like USB over bluetooth or over wifi. USB over bluetooth is tricky since USB low bandwidth (1.5mbit) almost fills up Bluetooth EDR. Wireless usb bridges don't seem to ea...
by bradtem
Fri Jun 25, 2010 9:47 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: gphoto2 and bracketed exposure short intro
Replies: 133
Views: 62349

Dream wishlist for tethered shooting

I don't shoot tethered yet, since for now I am using the bluetooth papymerlin. But I would like to, and I've made a list of someday features that an ideal tethered shooting pano program might have. The goal -- to make it quick and easy to set up and shoot panos, and to reduce mistakes in shooting th...
by bradtem
Fri Jun 25, 2010 7:37 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: Dream wishlist for tethered shooting
Replies: 20
Views: 4391

By the way, here's a quick and dirty perl script I wrote to correct yaw and pitch values in papywizard xml files if you didn't set the reference. #!/local/bin/perl $pitchmod = shift @ARGV; $yawmod = shift @ARGV; while( <> ) { if( ($pitch, $yaw) = /<position pitch="([\d.-]+)".*yaw="([\d.-]+)"/ ) { $n...
by bradtem
Fri Jun 25, 2010 7:13 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: [papywizard v2] Annoncement, feedback, bug report
Replies: 443
Views: 179873

While it is unlikely you will find a powered usb hub that uses other than 5v, chips that will convert a wide range of voltages to 5v are quite plentiful these days as it's a very popular thing to do. (They are in every little cigarette lighter usb charger, and in fact the simplest way to get one mig...
by bradtem
Fri Jun 25, 2010 7:10 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: gphoto2 and bracketed exposure short intro
Replies: 133
Views: 62349

BTW, I did make smaller files and they can be found with the xml at http://pic.templetons.com/misc/louise-105.zip

However, oddly, it doesn't do quite the same thing with the shrunk files. It doesn't do it right, but it's not quite as clear as it was with the larger files.
by bradtem
Thu Jun 24, 2010 7:18 am
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: [papywizard v2] Annoncement, feedback, bug report
Replies: 443
Views: 179873

I think the low row of images is due to the bad pitch range. I just turned on the unit wherever it was, and in most cases hand positioned to the one corner then arrow positioned to the other corner, so the pitch and yaw ranges are all wrong. The pitch range being all wrong makes it think the bottom ...
by bradtem
Thu Jun 24, 2010 7:08 am
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: [papywizard v2] Annoncement, feedback, bug report
Replies: 443
Views: 179873

I should have brought that one with me on my lastest trip. Anyway here's a question which I think I saw answered before, but I did not find the answer in a search. One of the reasons I got the merlin was to deal with the issue of APP being unable to find control points on regions of sea and sky in g...
by bradtem
Wed Jun 23, 2010 7:25 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: [papywizard v2] Annoncement, feedback, bug report
Replies: 443
Views: 179873

Sorry for delay? It's my experience with PCs that you can run the keyboard in a raw mode, which sends you key-down and key-released codes, rather than repeated keystrokes at the higher level. Of course one could still use repeated keystrokes as a means of doing the arrows. There are some keys that I...
by bradtem
Tue Jun 15, 2010 9:24 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: Speed, Keyboard, Shooting Profiles and Android
Replies: 18
Views: 5526

The suggestions to buy a head costing thousands are silly folks. Yes, those heads are nice, and yes, there is only so much you can do with the Merlin because it was designed as a telescope mount, but it's far from true that the only way to get a good fast pano mount would be to spend thousands. The ...
by bradtem
Tue Jun 15, 2010 9:20 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: Moving speed
Replies: 40
Views: 12350

Curious then. I did all these tests with the battery cover off so I could watch the motor and I saw the motor change speeds. Yet it's early firmware, or so papywizard reports in the logs. While indeed, overshooting and going back is a potential time waster, I had thought that perhaps going at full s...
by bradtem
Wed Jun 02, 2010 9:04 am
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: Speed Issue
Replies: 19
Views: 3663

Well, no objections.... but I am surprised at seeing no statements of interest, considering the number of threads here on how to get smaller crowns and rails to mount cameras. What do people want for that? How many want to use Arca clamps on your cameras because you keep dovetail plates on your came...
by bradtem
Wed Jun 02, 2010 6:58 am
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: Possible new supplier of crowns, rails etc.
Replies: 1
Views: 982

I also want this, as well as hand control of blending regions. APP is great at automatically assembling many panos, and we all love when it can do this and we don't have to do any work to get a good pano. But the reality is that sometimes it just can't do it. Sometimes due to its own limitations, an...
by bradtem
Wed Jun 02, 2010 4:50 am
 
Forum: Autopano Future
Topic: CP detector improvements - Manual CP editor
Replies: 23
Views: 26118

The gallery of people's setups is on this site http://www.autopano.net/wiki-en/action/view/Merlin-Orion-Papywizard_users_feedback You will see a few with heavy cameras. I found that the vixen clamp that comes on the Merlin is actually able to clamp an arca dovetail at the top. It feels quite sturdy ...
by bradtem
Wed Jun 02, 2010 3:20 am
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: ? Large camera on the Merlin with heavy lens, does it work?
Replies: 11
Views: 3055

Looking forward to new version. A different question: What if you do overshoot? If you know you overshot, the goto will still go back to the target, though I presume the issue is being sure you overshot so you can reverse the direction of the goto. I presume the merlin isn't so clever as to feature ...
by bradtem
Tue Jun 01, 2010 10:08 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: Speed Issue
Replies: 19
Views: 3663

I have never tried something has heavy as what you are using but the 70-200 f/4L lens does work -- and it costs only $700, so many buy it even with the 2.8 just because it is small and light. I have put on heavier equipment but in some cases you might need to consider mounting at the center of gravi...
by bradtem
Tue Jun 01, 2010 8:10 pm
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: ? Large camera on the Merlin with heavy lens, does it work?
Replies: 11
Views: 3055

When I wrote my existing script for finding panos (based on close sequences, all in the same mode, portrait) it was always my plan to make it easier by taking a deliberate "start/stop" sort of shot like the black shot described. Actually, rather than black, with my algorithms anything different woul...
by bradtem
Tue Jun 01, 2010 8:06 pm
 
Forum: Autopano Future
Topic: Automatic selection of images in import from motorized panohead xml
Replies: 7
Views: 2446

Well, if it requires a rewrite of the core, that's of course a big project. What about something more simple, a parameter that allows you to specify a negative shot time so that it fires the shutter shortly after requesting the move to the next location? Ie. just changing the order on the move and f...
by bradtem
Tue Jun 01, 2010 8:48 am
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: Speed, Keyboard, Shooting Profiles and Android
Replies: 18
Views: 5526

Nope version reported is firmware 010981 Some calculation. Assume a 50mm lens (40 degree field of view horizontal) and 5600 pixels on 5d mark II (you may have a different camera) That means each pixel is .0071 degrees. If we are willing to accept 1/3 pixel of motion blur (experiments will tell what'...
by bradtem
Tue Jun 01, 2010 7:19 am
 
Forum: Motorized panohead project: Merlin, Orion & Papywizard
Topic: Speed, Keyboard, Shooting Profiles and Android
Replies: 18
Views: 5526
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