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Everything posted by Peter_D

  1. I was able to observe the Moon for the first time in ages yesterday - the Montes Caucasus showed up really well. The Apollo 15 landing site to the south is just on the terminator, in shadow, I think. Equipment: Vixen A81M Huawei P9 15mm Plössl (Barlowed x2) Original Image was lightly processed using phone's editor.
  2. No problem..btw, I think I paid around 45€ for it used (here in Germany).
  3. Hi Annie, Sorry to hear about your loss. The first 3 photos are a 'Teleskop Service 7mm HR' eyepiece. I have the same eyepiece except it is a 4mm one. Best regards Peter
  4. Hi, I have an older Vixen GPE mount with rings for a 114mm reflector. I want to piggyback a smaller 60mm refractor on these rings. I want to be able to remove the piggybacked scope and any fasteners easily. I thought I found a solution with these 1/4" to 1/4" male adapters but what I gave found is a) difficult to get the piggybacked scope pointing straight ahead without over tightening the adapter b) the p.back scope is very low and c) (linked to a)) the fastener is subsequently extremely difficult to remove. Please, does anyone have a better solution? Many thanks, Peter
  5. It seems to me that your collimation is a lot better now than it was at the begining. I find sometimes there is a little play with the Collimator in my focuser. It can look unaligned and a slight adjustment centres things up better. I missed what focal ratio your scope has but if it is longer (e.g. f6, f7.9), your telescope will be more forgiving if your collimation is a little off. I would leave the collimation for now, go out and use it and enjoy the clear skies..
  6. I had to clean my secondary mirror a few months ago - first time doing so. One site recommended wearing disposable surgical gloves to ensure no accidental deposits from your fingers end up on the mirror.
  7. I currently have two Vixen scopes: a R114m on a GPE mount and a Tasco 9VR.
  8. Many thanks John for the prompt response and the great advice - just what I wanted!
  9. Hi, I have a 114mm Newtonian and a 102mm Mak. What position should they be in when they are left outside to achieve thermal equilibrium? Should they be mounted on their respective tripods? Also, should the lens / dust caps be left on or off? Should any attachments be removed from the back of the Mak? Thanks for any photos, guidance or advice! Peter
  10. Hi, I have these Vixen tripod legs for sale. Length 90cm. I am based in Germany so can send them EU wide. 65€ plus postage (DHL 5.99€ Germany/15.99€ EU) using Paypal. Thanks for looking! Peter
  11. Hi, I uploaded this image yesterday but it was very noisy so I have left it unrotated. I used a Vixen r114m and Huawei P9. Sorry for the size and quality but interesting that I captured Europa transiting Jupiter on Saturday evening (21:57 CET). Europa is just visible as a white speck on the Jovian limb just past 6 o'clock and its shadow is at 3 o'clock. I wasn't sure what moon it was so used the app Moons of Jupiter to confirm. Clear skies Peter
  12. I agree with MattJenko if money is very tight and you are willing to sacrifice apperature - I have a used Vixen 114/900 (f7.9) Newtonian from the early 2000s that gives very nice lunar and planetary views. It is mounted on a GPE mount which provides a really stable platform. If you are wary about collimation, the longer focus Newtonians tend to keep their collimation well and are more forgiving if they are slightly out than their shorter fl counterparts. Sorry for not really answering your question btw
  13. It is a way of naming and (usually) classifying the brighter stars in a constellation. The brightest star in the constellation of Virgo is called Alpha Virginis (Spica). As you can see, it is not always an accurate way of classifying the brightest stars in a constellation: Beta Virginis is not the second brightest star in Virgo.
  14. Reflectors that have a longer quoted focal length (e.g. 1000mm) than the actual length of their tube (e.g. 500mm) use a lens system before the focuser. These are Bird-Jones type reflectors and are not recommended for beginners: I don't have direct experience of one but from what I've read, they are very difficult to collimate. I have a 114/900 f7.9 reflector (tube is 800mm long) - because of its length, it needs a stable Equatorial mount but gives very good (comparatively narrow) lunar and planetary views - the longer focal length allows for higher mags to be achieved. Another advantage is that it holds its collimation well.
  15. Thanks! IIRC, I zoomed around halfway - this was to get a sharp focus (using the Galilean moons helped).
  16. My first attempt with video capture and stacking. Equipment: - Vixen r114m telescope - Huawei P9 smartphone - 25mm orthoscopic eyepiece - 5x Barlow lens Video capture converted to avi file and processed by Registax 6.
  17. Thanks! I use a Svbony smartphone holder. I had tried using another holder before it but I couldn't tighten the phone in place due to the positioning of the on/off button on my phone..this one allows me to position the phone in place.
  18. Hi, Had a go at photographing a few of the major craters near the terminator in the last couple of days. I used a Vixen R114m, 6.5 Bresser Plössl and my P9 Huawei smartphone. Craters are Tycho, Eratosthenes and Copernicus.
  19. Hi, Just came across this part of the forum -after a very cloudy winter, I had a week of clear skies in February. Scope is a SW Mak 102, Phone a Huawei P9. Eyepiece was a Vixen 25mm Ortho. Peter
  20. Thanks a lot for the prompt response, appreciate it!
  21. Hi, My name is Peter and I am living in the locality of Cologne, Germany. I have a second hand Vixen r114m mounted on an unpowered GPE mount. I am relatively new to astronomy and a complete newbie when it comes to motors, axes drives etc My plan is to upgrade to a 150mm or perhaps a 200mm reflector later on in the year. Reading the above comments seem to indicate this is feasible. My question is what are my options for adding a RA-drive to the GPE? Are any non-Vixen modern ones I could use? Many thanks for any feedback! Peter
  22. Hi, Hopefully someone can give me some good advice. Currently I have two main scopes: SW Mak 102; the aforementioned Vixen R114m (4.5 inch) on an unpowered Great Polaris mount w/short legs; I live in an area of high light pollution so a future scope will be for lunar/planetary/double star observing. I want to upgrade at the end of this year but I 'm not really sure what the next step is. Ideally I would like to keep the GP mount and get just an OTA: the r114m is over-mounted at the moment and I'm hoping I can still use the GP mount to keep costs down. But will it be worthwhile to upgrade to a SW 150pl for instance? Will the GP mount handle it? Or would the increase of 36mm just not be worth it? Budget is 250-300 euro Many thanks for any replies! CS Peter
  23. Thanks for the links, much appreciated!
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