Winter Solstice – Solargraph.

On the 21st June I set up my solargraph, this had a0.3mm laser drilled hole ( as supplied by the pinhole factory, also resistant to bird attack ( although I’ve had no problems previously)









It was sat on the end of my raspberry canes on the allotment.











On the 21st Dec I removed it , opened it up in a dark room with a red light and placed on Epson scanner, scanned at 1200dpi, in colour and saved as a .tif file for processing in Photoshop, see image below, had to repeat scan as first image contained some very strange artifacts, tinsely bits from scanning the Christmas card from Rosliston forestry centre!









Then it was processed in Photoshop CS6, first flipping horizontally to put image right way round and then inverting the played with levels, curves contrast and exposure, final image below, with camera view for comparison beside it. ( enlarge solar graph, shows detail better.)

Happy Solstice- Pete Hill









Solargraph – worked… (sort of)!

Six months has flown by….

Time to collect the solargraph we ‘planted’…


Yes, a few days early to be collecting, but today is my last one in the office and I wasn’t thinking of doing a 124 mile round trip to collect from Leominster on the shortest day!

What a lovely start to the day, a slippy stile and muddy walk!

If you remember from the last post, the first attempt had been damaged – probably due to the shiny  ‘foil’ pinhole being pecked out by an interested magpie!

2x previous photos of new solargraph in situ…(Above and below)

The site from Google Maps:

Kimbolton Church (Nr. Leominster) is in the centre. The solar graph is sited in that first tree-line (towards 10/11 o’clock), looking back to the church – thought it would make a nice view/foreground…

This time, we had forgone the foil (you pin-prick it to get a fine hole and therefore sharper image recorded) and instead drilled (No 1 drill bit), straight into the tin. No bird was going to get through that!!

Would this one fair better…?

This was it’s rough view as seen this morning upon collection at 8.45am….

First impressions were good… the baked bean can pinhole camera looked to have survived it’s six months and was in remarkably good condition with hardly any rust – sheltered under the trees.

Back at the office, second impressions were of an unremarkable small image and some image shift (double exposure)…. look how the church is double exposed on the original below….      ;-(


I don’t think it was ‘vandalised’ if it had, it would have been ripped out and strewn across the hedgerow… ‘Mother Nature’…. perhaps…? More likely a horse or sheep rubbing up against the stake (or wire fence) – although I did try and protect it somewhat…

(Above: Initial scan – 900DPI, Colour-Millions, mirror reversed on the horizontal plane, cropped).


If this hasn’t worked, that’s 18 months from the first try (summer>winter 2016) – I didn’t have another pinhole camera prepared after the first go to put imediately back in place, so waited until this summer solstice in 2017 to try again.

Again, I didn’t have another prepared to start again this morning either, so another camera would have to wait until summer 2018….




With a little Photoshop magic, it’s amazing what can be achieved!

Phew  😉


For January’s RAG end-month meeting, I’ll bring the laptop, scanner, etc. So if you tried your own solargraph and want some help processing it, bring it along and we can have a play!

If you want to preserve yours until then, I suggest you remove from the tin, ***dry completely with a hairdryer*** and then put nice and flat inside an envelope (or two) out of direct light.

Wishing you all a Merry Christmas!



A single day Solargraph.

Hi, quite a few people are running solargraphs (tin cans with pinholes containing photographic film) to capture the suns path between the Summer and Winter solstice. The one below was run for just one day.




























This is a Solargraph of the Eclipse on Aug 21 2017 taken in Idaho, for full details go to:

It didn’t use photographic film but photosensitive paper, that you stop/ develop by immersing in water, the sort of thing you can get from Hawkins bazaar.!

Pete Hill


























Barton Solargraph.

Thanks to Damian for the spare piece of photographic paper (I’d run out), have now set up my solargraph on the support poles of my Raspberry bed on the allotment.

Instead of a “normal ” pinhole  I’ve attached a laser cut 0.3mm pinhole from the Pinhole factory ( google it)

The camera is pointing due south with a view over the sheds and trees on allotments as well as the National grid pylon, lets see what happened in 6 months time Dec 21st!

Check out ( 21st June 2017) for what to expect and further links to producing solargraphs.

Pete Hill

Solargraph – ready!

Yes, a day or so early… but I’m off straight after work tomorrow night to see my mum at her caravan in South Wales – so it was today or never!

This is second time lucky for this location (between Leominster and my run to my B&B). Two years ago (after waiting for the full six months) I returned to collect to find the hole had been, I think, pecked through!

The best way to get a fine pin hole you see is to drill a bigger hole first into the tin. Then cover with strong (turkey) foil and then pierce that with a needle to get a nice fine hole. Only for the birds to be attracted by the shiny foil and peck it out!!!

Well not this time birds! Used a No1 drill to go straight through the can – see how you get on with that…

I suppose we’ll find out in six months then!

It’ll be interesting to see if the wire fence (which the camera is behind so the sheep don’t rub against it), will come out in focus or be a surreal blur with the Church as the main focus…

Julie has instructions to start the one at home, my sister has hers, J’s dad has his and Andy has two as well…

And you can have one as well come the meeting at the end of the month. Yes, we’ll be a few days past the longest day, but still loads of time to get a great image – I’ve used up the paper and got six new ones ready to go. £5 a pop – first come first served, monies going towards the observatory fund.


Heading towards the Solstice…

So decided to make use of the predicted nice weather Sunday morning to start the refurbishment of the RAG Solargraphs – bigger job than I first realised!

Plus make some new ones (been saving the lids from Pringles for some time as ‘J’ rations them!)

New blackboard paint and tank tape purchased…

Look at all them lids – ‘once you pop…!’    😉

I think I’ve got just enough cable ties, old broom handle and photographic paper to renew those for family and friends and bring along perhaps 6-7 new ones to the next meeting. It’ll be just a few days after the longest day, but still plenty of time to get a good sequence ’til December….

So if all goes well over the next weekend or so to finish these, I’ll bring them along for anyone at the group to purchase (all funds to the Observatory, so bring along £3 – £5 if you’d like one. The next lot will be a tad more to cover the cost of new cable ties and photographic paper).