MikePerhaps they'll add to the filter selection in due course.

At least this offers some solution for Pentax users with Samyang 14mm aspheric lenses.

Mike

Hi Guys

I'm not sure if you're just thinking polarizers here for wide lenses but in my search for some suitable wide angle lenses for astro work I came across this filter holder for 14mm Samyang just in case you hadn't seen it.

http://www.ukdigital.co.uk/samyang-sfh14-filter-holder-14mm.html

Mike

All now sold ...thanks!

Ok...having a clear out and reality check, I'm not really a user of flash in my photography but did use it occasionally when I had my Pentax 67II, used it once or twice with my K5 but can't really justify keeping it and sure someone here could make better use of it.

Bought new back in 2002 for £280 :-O it has seen well below average use, there are a few very light scratches on the casing but overall the condition is good to excellent, comes with black leatherette pouch, instruction manual and is boxed. (x4 AA batteries not included)

£75 (inc. shipping by collect+ within UK)





ALSO

Hotshoe Adapter F , boxed with instruction manual OR copy of manual***, mint condition.

£22 (inc. post within UK)




ALSO

Hotshoe Adapter FG, boxed with instruction manual OR copy of manual***, mint condition.

£22 (inc. post within UK)




ALSO

3 Metre Flash Sync Lead, boxed with manual OR copy of manual***, mint condition ... paid £40 new plus post back in 2002.

£30 (inc. post within UK)




AS I only have 2 manuals and 3 items marked by ***, I will make sure these items are sent out with both manuals for each item with either a copy OR original.

If any items are of interest payment by PayPal would be preferred.

Thanks for looking!

The aurora forecasts only give a rough guide based on Speed, Direction and Dynamic Pressure but the little dial showing the Bz component is the one to watch as the magnetic field can flip in minutes faster than any forecasts can predict.

If you watch ...in general the auroral oval in Auroral Map window on the same page brightens and fades almost in direct relation to the Bz component even if the Speed & Pressure of the solar wind are high.


Bz ...

North (+) higher the arrow less chance of aurora at lower latitudes.

Neutral (0) 50/50 chance depending on Speed & Pressure.

South (-) lower the better for chance of auroras at lower latitudes.



I think the smilie scale makes things simple!

Mike

This is the indicator to watch ...the little dial on the left of screen that says Magnetic Field Bz Component which should be 0 and preferably well into the negative figures in the yellow to red zone.

Even on nights of reasonably strong aurora if the indicator is greater than 0 into and into the green section (+ figures) aurora is supressed.

So ...if (+) Earth's magnetic field repels ...but if (-) then magnetic field is open for business!


http://www.swpc.noaa.gov/SWN/index.html

Just use the stiff plastic parcel tape found on parcels and used by most courier companies ...very stiff and can be doubled over if too thin...was also great for breaking into cars...

Just the pin Barrie circled in his images near the centre line of the battery.

Mike

Wow ...a forum dedicated to flashlights, that must be pure torcher!

Might as well throw in Bluetooth too ...

Yeah..Yeah...we'll believe you


I sometimes switch on the 'grid' in live view to help me with horizons, I prefer that than the electronic level ...or worse still ...my eyes!

Mike