michael8554

I see very slight star elongation here and there, but not consistent. You can't make these sort of judgements on a stacked image. Look at one short stretched exposure, to eliminate guiding and stacking artefacts. Michael

The zoom lenses that budget DSLRs kits come with usually have plastic lenses, for cost reasons. "I wonder how phone lenses really work at all, as they are so small their resolution is surely severely impacted?" Resolution is based on the number of pixels in the sensor. A 12Mp sensor with 1um pixels is tiny. All you need then is a lens diameter large enough to fully illuminate the sensor. So "so small" is not a resolution problem. Michael

Hi Christopher "Tired of shopping" Some SGL members spend more time shopping than imaging............. 😆 An EdgeHD with Hyperstar becomes f/2. Whereas a SCT is f/10, or f/6.3 with a reducer. So very different Fields of View. The Edge for large nebulae, the SCT for small galaxies or planetary imaging. Which do you need ? As Elp said about buy/sell, to deter people not contributing to the forum. Michael

Stuck between 2 scopes. A focuser in the kidneys can be quite painful............ 😆 Michael

The Leica L Flange distance is 20mm. And the ASI 585MC Flange Distance is 10.5mm. So only room for 9.5mm of adapters and spacers. You want a "Leica L Lens to Canon EF Adapter" if such a thing exists. Then a M42 x 1 (EF) to M42 x 0.75 (T2) Adapter. Then enough T2 extension to get that 20mm Flange distance. Or "Leica L Lens to T2 Adapter" plus T2 spacers Michael

"It's also recommended to remove current marker spot, but I think it's etched and might be impossible to do." Any reason to doubt that one is in the correct position ? Just stick the new one on top. Michael

Planetary or DSO imaging? The pixel scales required can be quite different. Michael

Try SharpCap in video mode and auto exposure. Michael

"I am using live view to keep the mirror up and avoid shutter vibration/delay." I'm not sure it's a good idea to have LiveView on, continuously, that may heat the sensor ? Are the downloads faster with LiveView off ? Michael

Hi Phil I'm not familiar with that scope. So I'm guessing you're using the Barlow to extend the image onto the DSLR sensor ? As Ouroboros suggests, can you remove parts of the focuser to allow the DSR to screw directly onto the focuser, and get infinity focus ? Otherwise, the 1.5X Barlow may not extend the image as far as the 2X, you'll have to hope. Michael

Post a jpeg of one of the Lights, so we can see what you started with. Michael

The 150PDS and 183c Pro give 0.66arcsecs/pixel, perhaps a tad over sampled ? So Binning to 1.32arcsec/pixel might be better for UK Seeing conditions. Michael

I'd expect the ad to include a Spectral Response Curve that shows the frequencies it rejects. Michael

If you are using EQMOD then you may have the ASCOM Pulse Guide Setting on i the very low default setting. Michael

The second guide graph shows Dec Stiction occurs at certain positions, not all as the first graph is fine. PHD2 struggles to correct the Dec Dither, taking many seconds to correct. Then Dec overshots and PHD2 again takes many seconds to pull Dec back. If your sensor does not suffer from Fixed Pattern Noise you do not need to Dither. Michael

I switched over after the fireworks to Jules Hollands NY show and thought I saw her in the audience of celebs, bopping away to Sugar Babes etc ? Michael

There comes a point where the usual Stacking software "runs out of range" so to speak, due to planetary rotation. The freeware program WinJupos "derotates", correcting for planetary rotation, allowing you to extend your imaging time by a factor of three or four. Michael

Never to be heard from again........

1. The telescope forms an image beyond the rear of the tube. That position is varied by the focuser. The lenses/eyepieces give different "magnification" depending on their focal length, usually engraved on the eyepiece. For example, a 10mm eyepiece will "magnify" more than a 25mm eyepiece. "Tried connecting my very old DSLR (Canon eos 600D), but capture very faint objects and i noticed there was focus issue" Your 600D is an excellent camera to start with, and is often used with these telescopes. You have to attach it with only enough adapters to allow the sensor to be positioned within the range of focus that the telescope provides. And faint objects require long exposures, minutes not seconds. With your Jupiter shot you got to focus in the end. You will now appreciate that the telescope focuser has a very large range of adjustment, many many turns of the knob. The image is over-exposed, so reduce the exposure. Switch to the Manual setting and adjust the shutter speed to a faster setting. 2. The ASI 183MC Pro is versatile, so can be used for Planetary and Deep Sky DSO imaging. But its small pixels 2.4um are not a good match to the telescope for DSO imaging. Michael

As Mandy said, too vague. For instance, a search for "ps1000" finds Hilti X-Ray scanners ! A search for "ps1000 telescope" finds a Celestron Power Seeker 1000 telescope and mount. No specific Instruction Manual for that, this one is generic: https://s3.amazonaws.com/celestron-site-support-files/support_files/1245780194_powerseekerinst.pdf Michael

Bizarre. Like switching your car off, then finding that pressing the accelerator crashes the car into the back wall of your garage.......... :-< Michael

Made it to space, successful booster and capsule landings, so catching up to SpaceX. Michael

Saw "atlas" and expected a book of charts. But it's just another app......... :-< Michael

Lat and Long can be presented as Decimal, and as Degrees-Mins-Secs. Peter has worked out the Degrees-Mins-Secs for you. To convert the Latitude, take the .6016 part pf 52.6016 and multiply by 60 to change to minutes - that's 36.096 mins. Multiply the .096 part of that by 60 to get the secs - that's 5.76 secs. So your Latitude is 52deg 36min 5.76 secs. Do the same for Longitude. But looks like 52 36N is close enough for synscan. So a quick approximation seems to be good enough, 60 x 0.6 = 36. Michael

The control panel changes from model to model: https://skywatch.brainiac.com/used/used_sct.pdf Michael