Re: Software wish list
Chris Curran <curran.chris@...>
Tom,
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And some of you guys think you have a "fast" telescope.... Ha! :) If you like that, I'm working on a 10" f/5 newt that's going to look like a Budweiser can when I'm done! :) cheers & beers, Chris
--- In ap-gto@..., "tucstargzr" <tucstargzr@...> wrote:
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Re: Software wish list
Chris Curran <curran.chris@...>
Rick,
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Flashlights: Thanks, but my problem has never been not owning enough flashlights, it's that Maxwell seems to always know when I'm going to need one! Really, it's a big joke around my family when it comes to me and flashlights. I have at least three of all kinds (neck, wrist, finger, hat, head, clip-on, slip-on, scuba, a few I've made, etc). Blind: Yes, it's that 4'x8'x2" foam board from the local home center (cut to 6' lengths). I used 3" duck tape for the hinges. I have to re-tape it about once a year, but other than that has been surprisingly durable. As long as I tie it down at the ends and anchor/support the middle it's handled 20 to 25mph winds (best guess). I've got loose piece that I place over the top at one end where I sit to keep the cold air off my neck during the winter. Other benefits are that it's very light (~20lbs) so I can fold it up and toss it on my shoulder to move it around. At 6' it fits nicely on the shelf at the back of my travel trailer or in the bed of my truck. It's really one of my most versatile astro tools... :) Psst: I tried the PVC frame type, but after making one, I decided I was too lazy to do all that measuring and cutting and gluing, so I got the foam panels and some duck tape. I guess that's the redneck leaking out of me... :) cheers & beers, Chris
--- In ap-gto@..., "Rick Wiggins" <rickwiggins@...> wrote:
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ASTROVID FireballCam all sky camera
Yves Laroche
Hi to all,
Is there somebody here that have experience with the ASTROVID FireballCam (All sky camera configuration with fisheye lens) for clouds monitoring during the night? Does the integration time is enough to show high altitude clouds ? Thank you very much, Yves Laroche
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Re: Software wish list
tucstargzr
Heh, all you need now is to paint a race car on the outside of your
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blind to go with the decal on the dew shield. ;-) Tom
--- In ap-gto@..., "Chris Curran" <curran.chris@...> wrote:
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Re: Software wish list
Jeff Young <jey@...>
I hear ya, Chris. I think this would be a feature mostly for the next generation of users. ;)
-- Jeff. From: ap-gto@... [mailto:ap-gto@...] On Behalf Of Chris Curran Sent: Friday, September 12, 2008 11:13 AM To: ap-gto@... Subject: [ap-gto] Re: Software wish list Jeff, I dunno. I stink at text messaging - ask my daughter, she'll tell you just how bad I am at it! :) I don't think it's something I'll ever get good at. Maybe if it was T9 vocabulary... ??? cheers & beers, Chris --- In ap-gto@...<mailto:ap-gto%40yahoogroups.com>, Jeff Young <jey@...> wrote: more popular, more and more people know the mapping from number keys to letters (2 = a, 22 = b, 222 = c, 3 = d, 33 = e, etc.) You could hook it up so that the number keys jumped into the star list at that point in the alphabet.
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Re: Software wish list
Joe Zeglinski
Hi,
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One more off topic lead - I saw an "ear mount" white LED flashlight, with push button switch, for about $2 in a grab bin, at a local job shop (Princess Auto, in Canada). This flashlight is about the size of a hearing aid plug. It clips around the ear like a cell phone headphone. I considered replacing the LED with a red one, but I personally don't like things hanging around my ear - especially since it is not padded, just a plastic ring. Still, it is a very good idea. Swap out the LED and slip on some tubing as ear padding, and you have a perfect solution. Joe
----- Original Message -----
From: <kgkirkley@...> To: <ap-gto@...> Sent: Friday, September 12, 2008 11:53 AM Subject: Re: [ap-gto] Re: Software wish list
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Re: Software wish list
Wiggins, Rick
Hi Chris,
That looks pretty slick. Looks like duck tape and foam insulation boards. Is it only duck tape that you used as hinges? How does it perform in wind? I guess you could make some guy lines and anchor with stakes for light winds. Thanks, rick --- In ap-gto@..., "Chris Curran" <curran.chris@...> wrote: wrote: bought as
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Re: Software wish list
Wiggins, Rick
Hi Chris,
I understand your desire to have a handy flashlight. Let me offer a few alternative and much cheaper solutions. 1. This is the one I use. I have several small red flashlights including tiny Gerber ones with 1 AA baterry. They are all on lanyards. I put one around my neck around an hour before dark and leave it there all night. Many times I need both hands, so I hold the flashlight in my mouth (might be a bit sporty to hold the handcontroller in my mouth). I keep a second one by my laptop (although a use a red gooseneck LED to light my keyboard) and a third one in my car or in my warming room if I at at the observatory. I stock spare flashlights and batteries (very handy for those Murphy moments and when I have guests). P.S. I keep a backup red and white flashlight in my car glove box (in addition to the other one in the car) for those Power Murphy moments. 2. Keep a spare flashlight clipped to your pier. I would not want to use the handcontroller as a flashlight due to the cord and potential for catching it on something while digging around on the ground looking for something. Just some alternative views as food for thought. Thanks, Rick --- In ap-gto@..., "Chris Curran" <curran.chris@...> wrote: places on the pier. I just "stick" it. I'd like the red led for use as aPAS reticle and you drop that 0.9mm black hex wrench on the ground....late. :) it "built in" so I didn't have to find it each time I setup. I suppose Icould epoxy one to the mount...wrote: should be hasslepointed up from in front of the keypad hook, since I find it to pokemuch morearound in the dark trying to attach the BLACK ring onto a matinghook on themount. That requires two hands as I end up doing it by feel - lighting", anddifficult with gloves on."painting withprovide a back pointing lamp when you need to check something it, andbase plateavoid it pointing upward at the scope.two axis morepivot point, or flush against the azimuth adjuster block, for a convenient viewpoint.
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Re: Software wish list
Wiggins, Rick
Hi,
YES! That would be a useful tool. I have a level I keep in the box with the AP cables etc., but having one that didn't require me to shine a flashlight to use would be icing on the cake! Thanks, Rick --- In ap-gto@..., Chuck Hancock <cdh59@...> wrote: mount, rather than a bubble level. That way one could use it forresuming from park on initial setup, as well as leveling the tripod AND themount. If you could implement this in the software, that would be OK, too.Oh, and a coffee maker on the larger mounts, if it could be used fortea as well. :)scopes pointing?are ortho and I never have a problem with guiding. Is it AP isIsn't AP already working on that (or have I misunderstood what star.planning with 'modeling')?I imagine that a facilty to polar align using reference starsMy 1200 does this now. You point at a reference star, change the accurate).Adjust alignment. Repeat. It's pretty darn simple (and very shouldWorks in the northern or southern hemisphere. What improvements be made to this?
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Re: Software wish list OT
Kent Kirkley
In a message dated 9/12/08 11:21:19 AM, J.Zeglinski@... writes:
One more off topic lead - I saw an "ear mount" white LED flashlight,I've seen these and other similiar lights that mount on head bands, hats, etc. The problem with them is that they are not individually pointable...; ie. you have to move your head around to put the 'circle of light' where you want it. This is especially problematic if you wear glasses for close focusing and have to move your head up and down to find the right 'focus zone'. A head lamp needs to be pointable separate from your head. Kent Kirkley ************** Psssst...Have you heard the news? There's a new fashion blog, plus the latest fall trends and hair styles at StyleList.com. (http://www.stylelist.com/trends?ncid=aolsty00050000000014) [Non-text portions of this message have been removed]
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Re: Software wish list
Kent Kirkley
In a message dated 9/12/08 10:15:10 AM, rickwiggins@... writes:
I understand your desire to have a handy flashlight.Segway.....into flashlights. I've been into flashlights all my life.....all kinds....but for astronomy and imaging you can't beat a headlamp. A headlamp allows you to use both hands and your mouth for their intended purposes. I usually wear one all night or whenever I'm out in the dark with the gear and it's alway handy. I used to use various 'regular' flashlights in my pocket, on lanyards, in my mouth, etc. I got tired of salavating all the time. There are a lot on the market designed for cavers, camping and mountaineering but I've found the best for our use is the inexpensive (about $10) GE Energizer headlamp which has two white and one red led. It is tiltable so one can put the light where you need it. It runs for a long time on 3-AAA's and is light weight. You can find them at Walmart, Target, etc. Kent Kirkley ************** Psssst...Have you heard the news? There's a new fashion blog, plus the latest fall trends and hair styles at StyleList.com. (http://www.stylelist.com/trends?ncid=aolsty00050000000014)
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Re: Software wish list
Ladislav Nemec <nemecl@...>
It's late even here in CA and I made my first attempt to use the 'meridian
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delay' method with my Losmandy/Gemini G11. The Gemini Level 4 does what it calls 'meridian flip', i.e. for stars close enough to the meridian, it moves from east to west (and vice versa) when it determines that the move is safe (based on stored east-west motion limits of the mount). It kind of worked except for my difficulties to look into the finder and/or eyepiece in one position of the flip. I'll try again using my camera to center the star with (first) elevation adjustment and then with a pair of stars at similar RA for azimuth adjustment. Bit too old to crawl under the scope to look through the eyepieces. AP manual I accessed through the links below (I think - I do not remember recent details any longer.) has an excellent explanation of the method and very handy list of star pairs for the azimuth adjustment. In the meantime, I used my favorite old polar alignment method of LX200 mount with an equatorial edge: sync on a star close to meridian at moderate DEC, move to Polaris, adjust using elevation and azimuth knobs. Back to the previous star, center it, sync it. Back to Polaris, and so on. Two to five iterations yield fairly good polar alignment with ANY equatorial mount. Currently, I am recording hours of tracking errors superimposed over RA and Dec 'drift' using PemPro. The Dec 'drift' (result of imperfect polar alignment) is usually pretty monotonous, mostly a straight line. RA 'drift', however, is rather bumpy because, I believe, imperfections of the RA gear (sidereal 24 hour gear). Good to know where the 'sweet' spots of your RA gear are. Probably a non-issue for AP mount owners, sorry for even mentioning it here. Thanks for your comments but I believe I am on the right track. Gemini calls pointing to the same object from the other side a 'Meridian flip' - I think it is equivalent to somewhat more involved 'meridian delay' mentioned in the AP manual. Best, Ladislav Nemec Big Bear, CA
-----Original Message-----
From: ap-gto@... [mailto:ap-gto@...] On Behalf Of Chris Curran Sent: Friday, September 12, 2008 3:09 AM To: ap-gto@... Subject: [ap-gto] Re: Software wish list Ladislav, "Meridian Flip" typically means something else - usually you're telling the software that your scope has moved from one side of the mount to the other for guiding purposes. When I "flip" sides, I recalibrate so I never use this feature. I'm guessing that if your GOTO mount calculates and uses LST, you could adjust the LST in your mount and use the MD method. I've also got an EM-200 mount that I never did figure out how to use the MD method with - there's no time setting. If you figure something please out let us know... cheers & beers, Chris --- In ap-gto@yahoogroups. <mailto:ap-gto%40yahoogroups.com> com, "Ladislav Nemec" <nemecl@...> wrote: here. It appears that the method described in detail in one of the AP manualscan be used for Gemini Level 4. I never tried that but, apparently, as longas the same object can be reached from both east and west from meridian, acommand 'Meridian Flip' appears on the Gemini Quick Menu. Actually simpler thangives a good advice, not only to AP users.
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Re: Software wish list
Chris Curran <curran.chris@...>
Jeff,
I dunno. I stink at text messaging - ask my daughter, she'll tell you just how bad I am at it! :) I don't think it's something I'll ever get good at. Maybe if it was T9 vocabulary... ??? cheers & beers, Chris --- In ap-gto@..., Jeff Young <jey@...> wrote: more popular, more and more people know the mapping from number keys to letters (2 = a, 22 = b, 222 = c, 3 = d, 33 = e, etc.) You could hook it up so that the number keys jumped into the star list at that point in the alphabet.
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Re: Software wish list
Chris Curran <curran.chris@...>
Ladislav,
"Meridian Flip" typically means something else - usually you're telling the software that your scope has moved from one side of the mount to the other for guiding purposes. When I "flip" sides, I recalibrate so I never use this feature. I'm guessing that if your GOTO mount calculates and uses LST, you could adjust the LST in your mount and use the MD method. I've also got an EM-200 mount that I never did figure out how to use the MD method with - there's no time setting. If you figure something please out let us know... cheers & beers, Chris --- In ap-gto@..., "Ladislav Nemec" <nemecl@...> wrote: here. It appears that the method described in detail in one of the AP manualscan be used for Gemini Level 4. I never tried that but, apparently, as longas the same object can be reached from both east and west from meridian, acommand 'Meridian Flip' appears on the Gemini Quick Menu. Actually simpler thangives a good advice, not only to AP users.
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Re: Software wish list
Chris Curran <curran.chris@...>
:)... You're OK. I have this for star parties and what-not to block
light, wind, smoke, etc: http://www.planetcurran.com/blind.php cheers & beers, Chris --- In ap-gto@..., "Joseph Zeglinski" <J.Zeglinski@...> wrote: bought as vibration pads for my Losmandy G11 tripod.
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Re: Software wish list
Richard Kinsey
Hi Jeff, having previously used a system where the reference stars
are numbered, I found that it does make searching the list for a particular star a lot easier and quicker. Whether or not my second suggestion is already being acted upon seems to remain a bit of a mystery. Cheers, Richard --- In ap-gto@..., Jeff Young <jey@...> wrote: becomes more popular, more and more people know the mapping from number keys to letters (2 = a, 22 = b, 222 = c, 3 = d, 33 = e, etc.) You could hook it up so that the number keys jumped into the star list at that point in the alphabet. Behalf Of Richard Kinsey Sent: Thursday, September 11, 2008 10:12 AMAP1200. However, I can think of a number of "refinements" that I would liketo offer as constructive comments for consideration.at any point in the alphabetical list. No one is going to remember thethe way through the list close to the required star and then the nextand previous keys can be used to find the exact star. In practice onesoon remembers the numbers of stars used on a regular basis and thesecan be selected immediately by entering their number on the keypad.effect of a non-orthogonal telescope. I appreciate that shimming thetelescope obviously overcomes this problem. However, with over 100lbs ofpractice. A facility within the software to "calibrate" the mount usingreference stars on each side of the meridian would be very useful indeed.Gerald Sargent <sargentg@> wrote:
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Re: Software wish list
Poschinger Konstantin v. <KPoschinger@...>
Hi Roland,
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the thing with the star in the zenith is very good. I haven't read it in the manual. You should add it there. Konstantin Konstantin v. Poschinger Hammerichstr. 5 22605 Hamburg 040/8805747 01711983476 Am 12.09.2008 um 02:13 schrieb chris1011@...:
In a message dated 9/11/2008 6:09:55 PM Central Daylight Time,
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Re: Software wish list
drgert1
Hi Roland,
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--- In ap-gto@..., chris1011@... wrote:
... I think people have trouble with my meridian delay method becausethey never try it. Maybe they read it in the manual, and conclude that it issomehow very complicated. It is indeed the simplest method available to you.... I use this method every time in the field when I setup and it works like a charm. The closer the star is to the meridian the better the result is as any residual azimuth error will be minimized there. Then, who wants to flip the scope when >2hrs off the meridian? ;-) It was interesting t read your azimuth method, too. I hadn't know of it and just used a drift method in the south. Quite practical if one just has the star for the altitude adjustment still sitting there. From when I see the first star to when I'm aligned it's not even fully dark. Clear Skies, Gert
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Re: Collimation of AP refractors
dalebranlund
Hi Group,
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I visually tested the re-collimation procedure with the AP-155 via star testing. Here are the results: 1) Nice views of Jupiter, its bands and its moons using 200x power 2) Easily split the Double-Double at 200x power 3) Nicely centered diffraction rings on both sides of focus using Vega at zenith. No adjustment was indicated. I am very satisfied with the visual performance and will test the scope with my image train during the next new moon. I did not hear from AP on the re-collimation procedure? Any other suggestions or a different approach from AP (or others) is appreciated? Dale
----- Original Message ----
From: dalebranlund d.branlund@... To: ap-gto@... Sent: Tuesday, September 2, 2008 12:48:00 PM Subject: [ap-gto] Collimation of AP refractors Hi Group, This post discusses refractor re-collimation after mechanical changes to my AP 155 OTA. I have a few questions about re-collimation. I changed the focuser on my AP 155 EDFS from the 2.7" focuser to the 4" focuser. The focuser is attached to the OTA via six cap head screws so it is relatively simple to change out the focuser. I wondered about the alignment of the focuser relative to the optical axis of the OTA, so I inserted a laser collimator (Howie Glatter's 2" model) straight into the 2.7" to 2" AP adaptor (3 thumb screw model). With the new OTA/focuser assembly, the focuser was misaligned so that laser spot did not emerge on the objective's optical axis. To see the misalignment, I made a precision paper target with crosshairs that inserts over the objective and into the lense cell. The laser spot shines through the paper, so it is easy to see misalignment. The misalignment was about .1" relative to the crosshair (about .1 degree). This was easily adjusted by loosening the six cap head screws, adjusting the focuser's position, and retightening the cap head screws. The laser spot is now precisely over the cross hair. I rotated the laser collimator to different angular positions within the AP 2" adaptor to confirm that the laser spot did not move off of the crosshair (no wobble). The inner surface of the objective (and outer lense surface I suspect) reflects a small amount of light back to the laser collimator. The reflected light can be seen on collimator's target if the objective has any tip/tilt error. You can see this reflection on the target by looking off-axis into the objective (don't look on-axis). I needed to adjust one of the tip/tilt screws on the objective by 1 turn to re-align the reflection over the center of the collimator. This corresponds to a change of 1/32" axially or .3 degrees tilt relative the optical axis. I was somewhat surprised that tip/tilt was off by .3 degrees tilt. I had just photographed a rich star field using the misaligned 4" focuser and objective tip/tilt error. Analysis of the photo using CCD Inspector showed little collimation error (2 arcseconds)but somewhat higher FWHM stars (3.5 arcseconds)than I am use to. So onto star testing the re-collimated refractor in the next few days. I will report back the results. Questions: 1) Has anybody used this laser method for re-collimation? With what results? 2) What method would AP recommend for re-collimation? Thanks, Dale [Non-text portions of this message have been removed]
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Re: Software wish list
Joe Zeglinski
So ... Chris ...
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I guess that rules out my using those 3 luminous pancakes I bought as vibration pads for my Losmandy G11 tripod. Probably could die of radiation poisoning.:-) Joe
----- Original Message -----
From: "Chris Curran" <curran.chris@...> To: <ap-gto@...> Sent: Thursday, September 11, 2008 4:55 PM Subject: [ap-gto] Re: Software wish list
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