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About lenscap

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    Star Forming

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  1. Hi kirkster, In UKABS select Ad Archives/Search Archives to reveal a search box that accepts a Boolean expression, eg +takahashi +mewlon I think you can only search 1 year at a time though. HTH
  2. Hi Dan, welcome to SGL. I think the first thing you need is a celestial guidebook such as turn-left-at-orion This will show you the basics of using a telescope, has details of hundreds of objects to observe & shows you how to find them by "star-hopping" from naked-eye stars. Clear skies.
  3. Would these be any good? https://www.stainlessautomotivefastenings.co.uk/index.php?main_page=product_info&cPath=565_123_25&products_id=9719&zenid=8ho9flpgmc5jdvr5u813dsg6a6
  4. Hi John, I'm afraid you can't track the ISS with a Skywatcher Synscan mount. I believe it is possible with some high-end mounts, and maybe with a Meade LX200 with some custom software. Have a look at this thread on CN. https://www.cloudynights.com/topic/461325-the-best-telescope-to-track-iss/
  5. Sunday 24th May, from 7:30pm BST, 200p F/5, EQ3-2, diy Onstep Goto. I've enjoyed watching Venus wane to a thinner & thinner crescent recently, but have never observed Mercury. Having the 2 planets & the Moon only a few degrees apart this week was an opportunity not to be missed. But the gap between the trees & the hill to my West is only about 1 "fist" wide - maybe 40 minutes of observing time. And the late sunset time means Venus would have moved behind the hill before becoming naked-eye visible. I don't have a permanent setup & can't see Polaris from my patio so I observe from a very rough "polar alignment" & have marked the tripod leg positions on the patio so I don't need to Polar, or Star align every session. So, having made sure to "Park" the scope at the end of the previous night's session I could just plonk the setup on the marks, "Unpark", "Goto Venus" & lo and behold a tiny crescent Venus appeared about 1 degree from the centre of the the 9x50 Finder in a sky that was clear of cloud but still pure white from the solar glow ! Isn't Goto wonderful ? Venus was such a beautiful thin 4% crescent with "horns" stretching to the meridian. At first it was shimmering but that must have been a heat plume because a tiny tweak of the focus steadied the image. The seeing was surprisingly good for the low altitude. I enjoyed the view at up to X250 (4mm TMB), before a Goto to Mercury. Mercury was not visible in the Finder but was a tiny dot in the 32mm Plossl. At higher powers I saw it as a 45% crescent. I know it was about 62% illuminated so the sky must have been too bright for me to see its full extent. I don't claim to have seen any detail - the brightness just reduced steadily from the limb towards the terminator. I still couldn't see the Moon naked eye so did another Goto & looked in the Finder. Nothing ! But the bright sky must have been fooling my eye because when I forced myself to focus at infinity it popped in sight. The visible crescent was about half the thickness of a crosshair ! In a 20mm Plossl I could see about 6 medium sized faint, ghostly craters along the limb of a 4% crescent. So in about half an hour I had my first sight of Mercury, & seen my thinnest crescents of Venus & Luna. Isn't this hobby fantastic ?
  6. Hi Spyros, The Celestron 20mm erecting eyepiece contains a set of "Amici" prisms which flip the image to allow terrestrial use, but which may be causing the problem you describe. If you wish you can remove the slotted retaining ring at the bottom of the eyepiece and extract the cage containing the prisms. The eyepiece will then produce an inverted image, like any normal astronomical eyepiece, and the view will be much improved and noticeably brighter without the prism set. The field of view will still be just as narrow though, about 30 degrees. Upgrading to an inexpensive Plossl eyepiece (52 degrees afov) would be a worthwhile improvement. Clear skies!
  7. I don't think so John, from the coordinates in the original post I think that the OP is in the Philippines. I checked Stellarium for his time & location & the ISS was not visible.
  8. Hi Tcerbulis15, If the EQmod EQASCOM driver had been installed it would show up in the ASCOM Telescope Chooser drop-down list in Cartes du Ciel, even when the computer is not connected to the mount. I suggest you download the driver file ( EQASCOM_V200q_Setup.exe ) from the top of the list of drivers at https://sourceforge.net/projects/eq-mod/files/EQASCOM/ , find it in your downloads folder, and run it to install the driver.
  9. Yes, the HEQ5 synscan & syntrek worm gear ratios are 135:1 and the motor gear ratios are 5.222 which gives an overall gear ratio of 705 motor revs for each rotation of the mount axes.
  10. Hi spillage, There is an example in program files/ciel/data/horizon/ and here it is . . . horizon_Geneve.txt
  11. "There are tobacco stains on this eyepiece Hubble ! Have you tried Baader Optical Wonder Fluid ? "
  12. Hi Toms, I assume you are using this guide; http://www.eqdrive.com.ua/en/support/статьи/first-steps-with-eq-drive and that you have installed the ASCOM platform, the EQmod EQASCOM driver, and the appropriate virtual COM port driver , and configured EQDrive. Then open Cartes du Ciel and click on the Telescope tab. When the ASCOM Telescope Interface opens, click Select. When the ASCOM Telescope Chooser appears select EQMOD ASCOM HEQ5/6 , configure that & use it to drive your mount. It appears to me that EQDrive emulates the HEQ5/6, so you need to select that mount from the drop-down list, and "EQDrive" does not appear on the list at all.
  13. Most Goto mounts, including Synscan, have a "Park" facility which causes the mount to remember it's star alignment when the power is switched off (provided the setup is not moved of course).
  14. Hi Nyctimene, If your object crossed a more or less full lunar disc in 30-40 seconds that's an apparent movement of, say 1 deg/minute which is much too slow for most satellites which are in low earth orbit. The ISS averages about 20 deg/min and about double that near the meridian where you were looking, so perhaps something in a higher orbit. I used Previsat to find a satellite that fitted an object that I observed transitting the moon during a recent partial eclipse. http://previsat.sourceforge.net/ Put in your time & location & see if anything crosses the moon. Here is the thread on my observation.
  15. Hi Miguel, The Stellarium graphic shows a fov of 80 arcmin X 50 arcmin, which is an aspect ratio of 1.6 to 1.
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