whizzbang

if you never try you never know ...... go for it

I like the look of this, is it waterproof? its threads like this that makes me want a 3D printer, keep it up, you're inspiring the sloth side of me

welcome from a dude who grew up in WsM....some good skies over the estuary weather permitting

Ahhh right, gotcha now, it really does sound amazing, looking forward to further updates. thanks for clarifying

if your there to see the LEDs, isn't it better to just run out to close the roof? i love the idea but isn't it getting a bit complicated?

and its angle of impact, there are some craters in argentina that are elongated and line up, its been suggested that the meteor had a very low angle of impact and was almost like skipping a stone across a pond ....

the Gulf of mexico is a 'failed' sea floor spreading zone (almost identical to the North Sea), ie plate tectonics thinned the earths crust with a massive upwelling of heat, once the heat was removed the basin lost its underlying support and 'sagged', allowing an influx of the Pacific ocean. One distinct advantage of basins is no erosion but plenty of deposition. the chicxulub impact never suffered significant erosion, quite the opposite it was preserved by significant deposition of sediments flowing off the stable land masses of Gondwana (south America) and Laurasia (north America). basins are areas where significant minerals and hydrocarbons are found, hence the discovery by Premex back in the late 70s. sedimentary basins like the GoM are actually quite rare, only a tiny percentage of impacts are recorded in the geological record. Did the earth actually have a developed crust during the late heavy bombardment? the oldest significant crust material is around 3.8 billion years old. this is an interesting one, thanks for posting that

rule 2 ... Data must be captured during the challenge start & end dates.

I originally started with 1.25 on an AA 102 at F5.7 with the Atik 383 and filter wheel, with no major problems, however when i changed scopes to a Borg 89 at f4.3 i had significant vignetting, the 31mm unmounted filters cured this, while also allowing me to use a 7 position carousel, allowing me to mount LRGB and Ha, OII and SIII. i would say go for the 31mm, as other than a little extra outlay, there are no downsides

Many thanks, back to testing, sounds like it may be the shutter then, as i took a series of darks on the bench and there was no sign of the defect. will try with the metal cap on and via the usb hub

resurrect time... is the op still active? and was this ever resolved, as i have just started to suffer similar effects to a light leak, im suspecting a dodgy USB cable somewhere as it doesn't seem to happen when i bench test the CCD

that is a wonderful gesture .... sorry i cant help.

think about a scope cover, i left my gear out all winter using a scope cover with no ill effects............