Deep Sky / Gear / General / Long Exposure Photography / Techniques / Technology

what a night

Tagged Leave a Comment on what a night

Yesterday afternoon, I industriously cleaned all my camera optics (CCD, MPCC both sides, IDAS-LPS both sides), and was convinced that this would be good for my flat field. More on this later. […]

READ MORE

Focuser

shortest possible drawtube?

Tagged , , Leave a Comment on shortest possible drawtube?

A, In order that I can use my scope for either visual or photo, I have this long-ass drawtube. It’s racked in for the camera, racked out for the eyepieces, everything works, […]

READ MORE

Uncategorized

Re: Soul Nebula is too big too

Tagged , , Leave a Comment on Re: Soul Nebula is too big too

Art Morton wrote: > Did you say TAK 106 …. dididid I here 106 I have a nice 66mm / 400mm ED refractor that should do the job; I picked it up […]

READ MORE

Focuser

shortest possible drawtube?

Tagged Leave a Comment on shortest possible drawtube?

Hi Ron, Now that I’m all comfy with how the Moonlite focuser works in my photography setup, I’m ready to start tuning the drawtube length / extension so that I can stay […]

READ MORE

Maintenance / Observing Reports / Optics

Re: RA driftage

Tagged , , Leave a Comment on Re: RA driftage

Art Morton wrote: > All three of these images are fantastic and show that you are tuning > in. In either case here, your optics are quite good. The stars are > […]

READ MORE

Uncategorized

Re: Fwd: [vc200l] Best FWHM with VC200L

Tagged , , Leave a Comment on Re: Fwd: [vc200l] Best FWHM with VC200L

Art Morton wrote: > J, > > You have this issue. Maybe this is the nature of the beast. I have > sent you my FWHM and they seem to approach the […]

READ MORE

ATM / Maintenance / Observing Reports

Leaving myself in a "broken" state is not good

Tagged , , Leave a Comment on Leaving myself in a "broken" state is not good

It’s supposed to be 90° tomorrow. Given past years, I’m expecting about 2 or 2.5 more months of clear before the rainy season. I’m just in “no working telescopes” mode at the […]

READ MORE

Deep Sky / Gear / Long Exposure Photography

M104, The Sombrero Galaxy in Virgo

Tagged , , Leave a Comment on M104, The Sombrero Galaxy in Virgo

Finally! A Virgo galaxy. I’ve had some kind of mental block about shooting in Virgo, so I finally forced myself to shoot down here. M104 is on the edge of being too […]

READ MORE

Deep Sky / Gear / Long Exposure Photography

M81, Spiral Galaxy in Ursa Major

Tagged , , Leave a Comment on M81, Spiral Galaxy in Ursa Major

Like M42 is a “tester” object for winter, M81 is a tester object for the spring. It’s big and bright and there’s lots of detail to bring up. In addition, if well-framed, […]

READ MORE

Deep Sky / Gear / Long Exposure Photography

M82, Spiral Galaxy in Ursa Major

Tagged , , Leave a Comment on M82, Spiral Galaxy in Ursa Major

This is a “freebie” version of M82. It was way off in the badly vignetted border of the above M81 images (M81 was centered). But once I applied flat frames to the […]

READ MORE

Techniques

Polar Alignment Calculations

Tagged Leave a Comment on Polar Alignment Calculations

Here’s a page that derives Polar Alignment Calculations. (update 5/2020: the original site is gone, so I found the text on Wayback and am inserting it below. This is by the original […]

READ MORE

Gear / Observatory / Telescope

Special Guest Star takes the mount at Hilltop O

Tagged , Leave a Comment on Special Guest Star takes the mount at Hilltop O

The Astro Jedi needed somewhere to store his light sab—- I mean, bucket, and I was only too happy to accommodate him. I have decided that I need to come to a […]

READ MORE

General / Maintenance / Observatory

Dome shutter is motorized again!

Tagged Leave a Comment on Dome shutter is motorized again!

I finally decided to bite the bullet and fix the shutter motor. Things went sideways last winter, and I’ve been opening the shutter manually (and tying it shut with rope, so we […]

READ MORE

ATM

Trixie 2017 – tube mods

Tagged Leave a Comment on Trixie 2017 – tube mods

I finally got around to cutting the MTA-UTA tubes to length; the only eyepiece that would come to focus with the focuser spacer in place is the Televue 55mm Plossl. If I […]

READ MORE