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Everything posted by knobby
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Which Scope - ED 72 or other!
knobby replied to Leon-Fleet's topic in Getting Started Equipment Help and Advice
Maybe, I'm probably cheating a bit as the Heart image is narrowband which may hide the blue fringing ? Ha Oiii Sii -
Which Scope - ED 72 or other!
knobby replied to Leon-Fleet's topic in Getting Started Equipment Help and Advice
Ah, shouldn't post so quickly ... Just realised what Billy might have meant ! It is fairly hard to get enough inwards focus travel with the Skywatcher reducer hence my use of the William optics reducer. -
Which Scope - ED 72 or other!
knobby replied to Leon-Fleet's topic in Getting Started Equipment Help and Advice
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Compression ring or extra thumb screw ?
knobby replied to Spaced Out's topic in Getting Started With Imaging
My vote is a 3rd screw 👍 -
Ouch
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Problems tracking with star adventurer
knobby replied to Nerf_Caching's topic in Getting Started With Imaging
Pleiades is looking good 👍 -
Problems tracking with star adventurer
knobby replied to Nerf_Caching's topic in Getting Started With Imaging
Could be wobble, I'd check your balance and polar alignment. I used to get around 2 minutes at 24 mm with rough polar align but at 105 mm or 300 has to get spot on to go above 1 minute on mine. -
Problems tracking with star adventurer
knobby replied to Nerf_Caching's topic in Getting Started With Imaging
I'd say check polar alignment as you're at 300mm. The bottom one looks like the result you get if you were to polar align using the darv method when poorly aligned. -
What is "Differential Flexure"? (Guiding Issues)
knobby replied to AstroRuz's topic in Imaging - Discussion
Differential flexure is where the guide camera / guide scope moves independently from the imaging scope / camera. The focuser movement is a good place to start. Everything needs to be solid ! Edit Just watched the video of focuser ... That's shocking ! Need to find a way of stopping that. The weight of the camera as it flips across meridian will surely cause movement . -
Apo recommendation in 250-350mm FL range
knobby replied to Icesheet's topic in Discussions - Scopes / Whole setups
It guides my reduced 72ED ok, about 335 mm -
I'm a Suv 😅 so don't know Chester but try a dark sky app on your phone ... Screenshot of your area attached
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Polar alignment on AstroMaster 130 eq
knobby replied to Clear Skies!'s topic in Getting Started With Imaging
I wouldn't put the 200 on an EQ5 for imaging, I'd go for a 130pds- 29 replies
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- polar-alignment
- astromaster 130 eq
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(and 1 more)
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As James said, I've seen that suggested before somewhere, it apparently stops the air movement inside the tube ... Worth a bash I guess.
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Poor quality phone shots but here's both ends of mine. Saturation boosted to try showing cable colours
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It does need the hand controller 😟 you can connect a cable to the hand controller but not direct to mount. Best bet is hopefully one of the Kent guys will see thread and offer to lend you one ... Some of us have spares as the Starsense accessory has its own handset.
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Hi Vlaiv, I love mine. It easily holds my SW72ED / reducer / filter wheel / zwo 1600M / finder guider approx 4.5 kg. I use the Star adventurer wedge on a manfrotto tripod with the Star adventurer counterweight (and M12 to M8 adaptor) I could really use another counterweight as the 1 doesn't quite balance. Never used it in AZ mode, just for imaging. I've used the wifi connection and recently gone to a Lynx cable ( use ascom or synscam mobile app) so I can use the laptops wifi to Teamviewer from the warm house ! I agree about the 'quality control' if you get a good one it's a cracking little mount. The alignment has similar options to the other synscan mounts, 1 star / 2 star / solar system etc, you can even point your phone at something and it follows it. (I plate solve with APT) So far I've imaged up to 5 mins guided with fairly round stars. ------------------------------------------------------------------------------------------------------------------------------------------------------------ Lynx cable - https://www.firstlightoptics.com/lynx-astro-cables/lynx-astro-ftdi-eqdir-usb-adapter-for-sky-watcher-az-gti-mounts.html Windows sysnscan app - https://skywatcher.com/download/software/synscan-app/ Ascom driver - https://skywatcher.com/download/software/ascom-driver/ EQ custom firmware - http://skywatcher.com/download/software/motor-control-firmware/
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Mmmm I have strayed into the 'P' word, but I don't do it often 😄
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Good news and bad news rolled into one ! maybe now there is evidence that light pollution WILL change or lives someone will start taking it seriously. Silly idea, but if Mr Johnson or Corbyn are listening perhaps they could introduce an after hours light pollution tax 🙂 I'd vote for them
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I'll give that a try if the clouds ever leave the UK 😄
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SW 72ED 0.8 reducer / flattener, guide graph posted above now
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I used to have the star adventurer mini (no guiding) and never really got on with it. Bought the Az-Gti and love it , it has a bit of backlash and is by no means perfect ( fairly iffy quality control) but the ability to plate solve and guide fairly well has increased my effectiveness massively. I'd get one ! Taken with Az-Gti on Manfrotto tripod/ star adventurer wedge / EQ firmware / ZWO 1600 pro / finder guider.
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Update: Be part of the Rosetta Mission - help with my PhD!
knobby replied to Helen's topic in The Astro Lounge
Done