Mark Jo

were you able to find a solution for the focus?

it is a ZWO electronic 7 position 36 mm filter wheel and the filters Astronomik 36mm unthreaded. I have tested again covering the telescope objective and could see light in the position 2 but also the 1st and third positions. I removed the camera from the telescope capped the the nose piece and covered filter wheel with heavy cloth and the stray light disappeared. have taken everything apart and reassembled but the only thing that appears to make any difference is putting duct tape around the join of the filter wheel and spacer for back focus. There was no problem with this before so not sure what changed. any spacers came with the filter wheel or camera. is there any better solution than tape?

I have been imaging with a ZWO EAF and not had any issues until a few weeks ago added a new filter and also removed the existing hydrogen filter to remove some dust. After refitting the Hydrogen filter there was a band across the image as if there was cloud in the image, (there were no clouds). removed filter and refitted same as before. Contacted Astronomik to see if there was problem with the filter - they advised that appeared may not be fitted correctly. after moving filters to different positions can confirm is not issue with the filter but appear to happen with all in the 2nd position in wheel, the orientation of band is always the same and I am unable to see any problems with how the filter is fitted after multiple attempts. I have included some images as example

Many thanks for the replies. everything appears to be working ok, but just wanted to be sure. now just need to sort out cable management / mess !!😋

Hi, I am not sure where to post this so apologies if this should be somewhere else. when I use the jackery 500 power supply connected to the Pegasus Astro power box advance , it shows the voltage supplied to the devices as 13.3 volts. on the power box console, when connected from mains power to the power box the voltage is about 12.5 to 13 volts. I am not sure if it makes any difference that I am using the Pegasus unity platform to manage the devices? so far I have not seen any issues, but is this voltage of 13.3 volts going to damage the camera and other devices connected to the power box or is this acceptable?

I have been lucky enough to be given a H alpha and a OIII 36mm filter but need a filter wheel. I am considering a https://www.firstlightoptics.com/zwo-accessories/zwo-v2-7x-36mm-electronic-filter-wheel-efw.html, ZWO V2 7x 36mm Electronic Filter Wheel. (am hoping to add filters when able). I have looked at the detiails here and on the Astronomik site but am not clear if these filters will fit Available Sizes All Astronomik filters are available in a wide range of sizes. You will find all available sizes of your selected filter on it´s page. Usually we offer the following sizes of mounted and unmounted filters: Filters with protective rings for filterwheels (without thread) round filter with 36mm diameter (optical Thickness 1mm / mechanical Thickness 3mm)round filter with 50mm diameter (optical Thickness 1mm / mechanical Thickness 3mm) does anyone know if they can be used with this filter wheel or if there is a better option?

hi, apologies if this is not correct location for this question Trying to setup for guiding for first time with these cameras ASI385 MC and ASI290 mm mini , when both connected on usb3 and USB 2 respectively only the ASI290 appears and is duplicated. Both on USB2 appear correctly Have looked at various forums and have checked the details below but nothing has helped with this. Guide camera ZWO ASI290 mm mini connected by usb 2 port and ZWO ASI385 MC for imaging to USB 3 port both with new 2 meter usb cables Sharpcap v3.2.6477 10 year old Toshiba laptop No obvious issues connecting singly. Both appear in device manager with correct name. In Sharpcap when both are connected ASI385 to usb3 and ASI to USB 2, the ASI290 appears duplicated and no 385. Both connected to USB 2 ports they appear correctly under the ZWO cameras. Have looked in some forums and have most recent version of sharpcap installed, updated ZWO drivers, disabled USB Selective suspend in the power management and disabled the sleep option in windows. Checked the USB drivers and they appear to be upto date When both cameras were connected the ASI 290 was losing connection every 20 – 30 seconds, disabling USB Selective suspend being disabled appears to have stopped this happening Is it that the laptop needs to be retired at least from astroimaging I saw a mention that there could be an issue with chipset, or is there anything else that I can do ? log.txt

Thanks for this

Hi I have bought a skywatcher MN190 recently as the collimation appears a little off yhink need to collminate, assumed that there would be locking and adjustment screws on the primary but theee are are only 3 assumed adjustment stews, though there are 3 screw holes for locking??? is this correct??? or should there be 3 locking Screws and 3 adjustments? the included ‘manual’ is useless no information on this. cant find much useful info on doing this on MN’s assumed Colimation would be more less same as Newtonian- is that correct?

Thanks for the comments, they have helped. Only concern is the weight 🙁. Is there any case or bag that can be used to transport it?

I am considering to buy a Sky-Watcher Explorer 190MN DS-PRO Maksutov-Newtonian or a newtonian OTA for about 50 / 50 use though that may change with time. I dont have a fixed choice on the newtonian but thinking of an aperture of 200mm. I should have an Skywatcher eq6 mount soon and should be sufficient for what i get. think that the Maksutov-Newtonian will give better images but not sure how it is for visual? i have heard that the Maksutov-Newtonian is difficult to collminate compared with newtonians also that the dept h of focus is very shallow. does anyone have experience of using Sky-Watcher Explorer 190MN DS-PRO, would like to see what pros and cons that i need to consider