Rusted

Dunno. All I can see is worms. ☺️

Nice! Amazing proms! Is a dog's breakfast visible in H-alpha? 🤔

Another superb set!

What exquisitely subtle and detailed images Steve! Despite the constant limitations, presented by weather and seeing conditions. You are the master of full disk, white light, solar imaging. Those who wish to improve their own imaging. Need look no further than your work. As their ultimate goal and shining example of what is possible. Your ability to constantly repeat this incredibly high standard. Is proof enough of your skill, dedication and determination. ☺️

Congratulations on your new Lunt and an excellent first step. Now keep doing it! You want to capture some surface details next. This needs shorter exposures to avoid over exposing the surface. To discover more details about any solar feature you should record the time in UT [UT or Universal Time] and date. Then you can compare your image or observation with other images posted online. Some imagers kindly post an image of the earth at the correct scale. You can then use the size of the earth as your guide. I found this very useful post on another forum when I searched for your question: I am not sure whether such direct linking is acceptable here. https://www.cloudynights.com/topic/855163-how-to-determine-the-height-of-a-prominence/#entry12356376

Nicely done again Luke. Those clouds nearly spoilt it for the chickens!

Thanks. I keep it firmly in mind that there is nobody to stick a plaster on any injuries. Probably nobody would find me for weeks out here in the sticks. It gives one a proper sense of fragility and vulnerability.

Thanks. The dismantling of the outer building is going very well. The large Torx screws have all responded to a key or the rechargeable driver.

Thanks. My memory isn't what it probably never was. The uprights of the outer building are paired 2x6s. [50x150] Screwed firmly together and beveled on the outer faces. To match the angle of the plywood cladding. I used a DeWalt table saw for this. Great fun with such long and heavy pieces. Working outdoors. A handheld, circular saw might have been better but I never liked the great weight of these. Had the plywood dome been waterproof I might never have bothered with the bigger dome. I used expensive cartridges of marine sealer but this didn't keep the water out of the countless joints. A shame because the dome was quite attractive and unusual. On of Peter Drew's, half cylinder "domes" would have been an easier thing to seal. Access was far too difficult and dangerous, at that height, to have clad the dome in GRP in situ. In retrospect I could have had the dome lifted down with a crane to work from ground level. Unfortunately access for any crane was simply too difficult on my long [200m] and narrow drive. Just getting a modest tipper truck to deliver gravel proved to be quite a trial. The local, lorry mounted, crane hire uses an even bigger truck. It could never have reached me.

I thought it might be interesting to see the construction l used. As I dismantle my 14 sided, enlarged, 4.3m/14' observatory building. Which I literally built around my original 10'/3m octagon. The larger building was offset by 1.3meters to the west. The 4.3m dome is now sold. [£5!] Once the plywood cladding is removed the construction details of the skeleton can be clearly seen. 4x4 [10cmx10cm] full height, timber for uprights. Then the "sides" are cross-braced in 2x4 and 2x6. Using screws throughout. I always use Torx screws because things can then be dismantled later. Without destroying the timber. [Recycling!] A DeWalt sliding miter saw was ideal for obtaining close fitting joints. The plywood cladding acts as a stressed skin. Providing triangulation without using diagonal timber braces provided enough fixing screws of adequate size are used. Gluing in addition to screws is a safer option but I prefer to be able to take things apart in case they don't work out as intended. Diagonal bracing plus stressed skin is the belt and braces approach. My building never flinched during storms. Its rounded form probably helped. A rectangular or square building has no such natural stability. Excuse the mess!

Thanks for sharing your excellent set of images. It was just like being there. ☺️

Forgive my doubts but isn't your "filtering" just colouring white light images to personal taste? There is no narrow band filtration involved. As most of us would define H-alpha, Calcium, or any other widely accepted solar imaging frequency/wavelength. Your coloured filters don't apply monochromatism. Because they simply don't have that capability. Their pass band is far too wide. Even when stacked. One cannot stand inside a church window and say the pretty red view of the sun outside is "Infra" or "H-alpha" anything. Nor does the royal purple view have anything to do with Calcium in the solar spectrum. Except by accident in matching the visual impression at the eyepiece of a real, solar telescope. Your "results" could more easily be achieved with free imaging software. Just as many solar imagers apply false colours to their B&W monochromatic images to show their personal preferences. Usually to match their own visual impression of the vibrant, original colour. As seen at the eyepiece of their hideously expensive, solar telescope. Monochromatic light is tightly filtered to a very narrow bandwidth by multiple, precision, optical components. The narrower the bandwidth the greater the expense. Finally, there is the serious risk of others less knowledgeable: Copycats trying to view the sun with "cheap" coloured filters. Leading to severe eye damage or even permanent blindness. Your "cheap" coloured filters offer ZERO PROTECTION from the sun's harmful rays. Not even when squinting through them at the "naked eye" sun overhead. Adding your "cheap" filters to any optical instrument to look at the sun is almost guaranteed to cause instant and permanent blindness. Or severe and permanent eye damage.

You say astrology and we say meteorology. Let's call the whole thing off!

Great set Nigella! Well worth the wait. ☺️

When I were a lad: I was the victim of a severe dose of Dixon's Prinz 10x50 binoculararis. No amount of prism adjustment ever resulted in anything but chronic and untreatable strabismus.