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adder001

COMPLETED - COMPLETED - Skywatcher Skymax 127 Synscan AZ GOTO with Wifi Adapter & powertank

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Skywatcher Skymax 127 Synscan AZ GOTO

Barlow Lens (1.25")
6x30 Finderscope
90° Star Diagonal (1.25”)- Repaired
SynScan AZ GoTo Computerised Alt-Azimuth HD Go-To Mount with Handset
Stainless Steel Tripod with Accessory Tray

Extras
------
Skywatcher WiFi Adapter (This is so you can use your mobile phone for control to control the scope instead of the handset)

Celestron Powertank with cable & charging plug

T Adappter & Ring for Canon 1300D Camera

Meade 8- 24 Zoom lens

Bahtinov mask x 2, One for telescope and a small one for canon camera lens

L Bracket for attaching a camera to the mount rather than piggybacking onto the scope

Plastic carry case for lenses masks etc.

Diy Solar filter using Baader Solar Film

Turn Left at Orion Book and The Sky at Night paperback Patrick Moore

This telescope and accessories are only 6 month old and I have only used it 3 times, so it is like brand new except for the star diagonal which has been repaired.

Powertank was bought at christmas and has only been charged once

The star diagonal got dropped and the silver insert (the bit that you put the eyepiece into) that screws into it became slightly loose
in the threads so I repaired it by putting superglue on the threads and screwing it back in.
It is held solid now and no glue is visible and all the eyepieces fit perfectly.

All instruction manuals and tools still in bag.

Non Smoking Household

£400 ono reduced

Location Bolton, North West England. Collection or I can do local delivery in person. I would prefer this as postage would be expensive also the risk of damage in transit. If needed then I estimate around £15 due to size and amount of items if sent by courier.

 

case inside with bits small.jpg

complete setup small.jpg

handset small.jpg

lens small.jpg

meade lens small.jpg

scopealone small.jpg

solar filter small.jpg

wifismall.jpg

Edited by adder001
SOLD

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    • By Andy_ZH
      Hello all,
       
      this is my first post at SGL, and it will be quite long. I am not native a English speaker, so please excuse any mistake.
       
      I have quite some plan with my telescope mount and its goto control, and I am looking for some feedback and comments. If somebody else did a similar project, please let me know. And please feel free and encouraged to make suggestions, ideas, critics, etc.
      The story in a few buzzwords: Raspberry Pi Zero → direct control of TMC2209 stepper drivers via the Pi's Uart serial interface to drive my telescope mount. I am writing a software (optionally: open source?) to control the mount. The language will NOT be C, as typically used for Microcontrollers (I know for instance OneStep)
      I am using Kotlin, which is a more advanced JVM language.
       
      I think this should be enough information to filter the readers who are interested in reading the rest of my post.
       
      Now the long and detailed story:
      My professional background: I am a physicist, and did a PhD in EE (Power Electronics). Later, I became software engineer. Besides being fascinated by Astronomy, I am a tinkerer (Reprap 3D printer, electronics, …). I did grind my first mirror (a 6'' Schiefspiegler) when I was 15 years old, and I built the cookbook CCD cameras in the 90's.
      After many years without a telescope (study time, relationship, ... ), I settled down with my family, and I started to get back to Astronomy.
      Recently, I did by a quite a massive second hand mount: the “Vixen New Atlux” from another other stargazer in Switzerland. My opinion is that the New Atlux' mechanical design is superb. It has (had...) internal wiring, the counterweight bar can be hidden in the mount for transport, good polar alignment screws, it has an excellent polar finder with a dimmable LED.
      But on the other hand the electronics: two weak servo motors in combination with the incredible Starbook 5.... Seigh... the starbook...(!) it is, well... the mount is just superb, and no more comments about the starbook game boy, which shall rest in peace at the garbage dump.
      I removed the servos and all electronics, and I put 2 stepper motors into the mount, which are coupled to the gear with a timed belt. My original plan was to put an Arduino into the mount in order to control the steppers. I have an old goto Celestron cg-5 with Starsense, and it would have been quite easy to mimic - with the Arduino as interface – the servos of the old cg-5 and translate the Starsense control signals to my New Atlux. I can write C, and there is even an open source project called OneStep, which uses a Microcontroller in a similar way as I do.
      But I don't like to write C code anymore. In the 3D printer community, people need to use real time electronics to control the printer steppers. Due to the real time requirement, C with a real time microcontroler (Arduino & similar) are the only option for 3D printers.
      Do we need real time for our telescope? No. We don't need to control a lot of Motor accelerations and high speed control. For the telescope, we need to set the Motors speed precisely, and we need to drive to any position in an accurate and controllable and slow way.
      Then, there are new stepper motor drivers available with as much as 256 microsteps. The TMC2209 stepper driver , which is very well know in the 3D printer community, is not vibrating at all. It runs just smoothly, also at very low speeds. I do drive my motor with 0.25 rpm (sideral speed). In case of a slew, I can accelerate to 1500x sideral speed, which also would allow me easily to track the ISS. Wonderful.
       
      The current status of my project is:
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      I have so many ideas on how to extend the ecosystem of my software, but these ideas are for the longer term (maybe years from now on):
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      Besides all my ideas, the first and most important focus of the software will be:
      Readability (therefore my choice of Kotlin), extensibility and open source. I like to have the Maths of the internal mount model clearly visible and understandable in the software. The calculations that are done within all our goto mounts are no rocket science. I admit, I am the nerd guy who wants to go the hard way and implement this from scratch.
      I am looking for a good project name, do you have any suggestions? How about QuickStep? this is possibly too close to OneStep and would offend the creators of OneStep?
      Does anyone of you have interest in joining my plan? Doing such a project in a small group would be more encouraging then just doing it for myself. And of course later on, I would appreciate if other stargazers would update their old mounts with my software.
       
      Any comments on my project plan are welcome!
       
      Clear Skies!
      Andy
       

    • By merlin100
      I'm tempted to go down the route of getting myself a brand new reflector...  My friend's old Meade 114/900 is a good telescope, but I want something of my own and with a bit more light gathering power.  To this end, I've been looking at a couple of different models and manufactures.  
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    • By Davehux
      *NOW SOLD*
      I've just blown all my pocket money on a Rowan belted HEQ5 Pro, so it's time to move on my trusty EQ5 GOTO, before my wife spots 2 tripods in my shed 😉
      I'm sure everyone knows these mounts, but just to say that it's in full working order, with just the usual wear marks here and there, and a few marker pen lines for Home and counterweight positions.
      Comes with 12V power lead and car cigarette plug, and sync lead with USB adapter to let you upgrade the firmware on the Synscan handset. It's currently at 4.39.05, which was the latest version a couple of months ago. There are 2 x 5kg counterweights as well.
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      Yours for a sensible £350 - a new one will cost you around £575 from most of the usual retailers. Paypal Gift or Bank Transfer most welcome
      Thanks for looking
       
       





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