Padfield

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Padfield
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Re: Padfield

Post by Padfield »

Dragonflies seem better at spreading than butterflies, David. I wonder if it's due to greater longevity of the carnivorous adults. European species don't seem to have much difficulty colonising the UK, just as African species seem to be able to move into Spain.

The end of my quarantine was dominated by holly blue larvae, which I posted on a separate thread. The last few days - of freedom - have been more about Pierid early stages. Two days ago, I watched a female small white laying on feral crucifers of some species along the river (lots of arable land nearby):

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(the strange, grey markings are the shadows of flowers)

She was not at all careful about where she laid - flower, leaf, upperside, underside - and spent little more than a second on each egg:

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There were plenty of older, yellow eggs on the leaves:

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Today, while repairing our beanpole structure after the storms and rains last night, I spotted a female green-veined white laying in a weedy patch near the tomatoes. As soon as I could, I had a look to see her work and found plenty of eggs on what I think is shepherd's purse, but all the plants were very young:

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As this patch will probably be reworked in the next few weeks, I thought I'd repot a few plants with eggs on and keep them safe:

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There are four plants and five eggs there - the two plants in the right pot came out of the ground together so I kept them together.

According to Pete's book, the eggs should hatch in just a few days. If the plants thrive, I'll keep the whole lot in a cage and provide more plants as necessary. If not, I know where the eggs came from so will return them to the wild.

Guy
Guy's Butterflies: https://www.guypadfield.com
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David M
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Re: Padfield

Post by David M »

Padfield wrote: Wed Aug 26, 2020 5:28 pm...As this patch will probably be reworked in the next few weeks, I thought I'd repot a few plants with eggs on and keep them safe..
Quite right too, Guy. Give you something to concentrate on during the darker, gloomier months. :)

Will you be naming any resulting larvae?
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Re: Padfield

Post by essexbuzzard »

Congratulations on the Desert Orange Tip in particular, Guy. I have seen them up near the hill-fort in Malaga, where some food plant grows, but only one or two per visit. As you mentioned, you could be a little early. My sightings were in September.

The Mediterranean Skippers are desirable too, never seen those!
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Re: Padfield

Post by Padfield »

Hi David. I don't think I'll be able to keep tracks on which caterpillar is which, so unless they have distinctive characteristics they'll probably have to go without names. :D I thought I had one small white among them, but none of the eggs have gone really yellow so maybe not. None have hatched either, doubtless held back by the recent very cold weather.

Thanks Buzzard - yes, I remember your photo of desert orange tip. My fresh male and presumably relatively fresh egg suggest a rather staggered voltinism, so I don't know if I was early or late or if there isn't really a beginning and end to each brood. I certainly won't get back before next spring now, and numbers are said to be less in the early broods.

Recent butterflies (since the end of my quarantine) have included some lovely small coppers and commas, a few speckled woods and red admirals, lots of whites and a grayling or two:

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A couple of nights ago it was full moon - and a beautiful, clear night, with Jupiter and Saturn putting on a great display. After I'd taken a few shots of the moon I decided to see if the superzoom could resolve Saturn's rings. To my surprise, it could. Here are two different crops of the best shot I got, taken at 1/250th sec [EDIT: 1/100th sec]. They wouldn't win any prizes, but it was nice all the same to get a photo of the ringed giant. I gave my telescope away years ago and haven't seen the rings since:

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Guy
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Re: Padfield

Post by trevor »

Your two shots of Saturn are little short of amazing, Guy !.
I hadn't realised that such a feat was possible with an ' ordinary ' camera.
Your images emphasise the remoteness of Saturn.

Stay safe and well,
Trevor.
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Re: Padfield

Post by millerd »

The shots of Saturn are amazing, Guy. :o :) What do you use to keep the camera steady? That's always the issue I have when trying to use a lot of zoom on my camera.

Cheers,

Dave
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Re: Padfield

Post by Padfield »

Thank you Trevor and Dave. I just looked at the exif information and in fact that picture was taken at 1/100 sec, not 1/250. I took a series, with different shutter speeds. To steady the camera I used a tripod, obviously, and a 10 sec time delay. At full zoom the lens sticks out a long way and I find 2s is not always enough for it to be fully still by the time it takes the picture. I'm told you should take off image stabilisation when you use a tripod but I didn't.

Saturn was still quite close to the horizon, so the light passed through a lot of atmosphere. Marginally better pictures could probably be got when it is higher in the sky, but this was only really proof of concept - for decent pictures you need a telescope.

Whenever I look at Saturn I think to myself that on its biggest moon there is man-made artefact - the probe Huygens. Just incredible to stare across those vast distances and know that we actually navigated a craft all that way and landed it safely. A mind-blowing achievement.

Guy
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Re: Padfield

Post by MikeOxon »

Your Canon superzoom did an excellent job on Saturn, Guy. The result are very similar to ones I have taken with my Olympus with a 100-400mm zoom lens. Keep watching, as Saturn and Jupiter are due to come into 'super-conjunction' on December 21st, although unfortunately close to the setting sun.

Mike
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Re: Padfield

Post by Padfield »

Thanks Mike - and thanks for the heads-up. I just ran Stellarium for that evening (21st December) and pulled off this screenshot for 16h57:

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They are indeed incredibly close, and all four of Jupiter's Gallilean moons are visible (the fifth one in line in the picture is a star, not a moon). Unfortunately, with my camera, the exposure (shutter speed) necessary to reveal Jupiter's moons completely burns out Saturn, which appears as a bright oval. But it should be easy to take a series of shots at different shutter speeds and photoshop them together. If it's a clear evening ...

At a quite different scale, some of my green-veined white eggs hatched today while I was out. I found this 1st instar cat beneath the leaf, looking for a fresh spot to mine:

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The pitting is his doing.

I was out looking for white admiral caterpillars, or more particularly, evidence of where they had been. I found none, but I did find this strage creature lurking in a silked-up pocket of honeysuckle leaf:

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I respected his privacy and didn't try to get better pictures, so don't know what he might be.

And just because I haven't posted her for a while, here is Minnie in the heather this afternoon:

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Guy
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Re: Padfield

Post by Padfield »

Some more green-veined white cat shots, first from yesterday ...

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... and then from today:

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That last one hatched this afternoon and is busy eating his egg.

Near the river, a goat moth caterpillar was out for a walk:

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Guy
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Re: Padfield

Post by David M »

Impressive array of subjects in your last few posts, Guy, ranging from the very small to the very large (not to mention the very canine!)

I struggle to take images of the full moon with my camera, so 10/10 for obtaining such amazing views of Saturn. :mrgreen:
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Re: Padfield

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Long time, no post - not least because my bike was stolen in mid-September so I couldn't go further than walking distance (Minnie's) from home. Because of the pandemic, every decent bike in my price range had been bought up (bikes and puppies, tragically, were all the rage in 2020), and coupled with a delivery error by Evans Cycles I didn't get a replacement until after I had seen my last butterfly of the year.

Last spring, when I couldn't travel, I spent my EasyJet refund on a bat detector - worth every penny. This year I won't be able to travel either, so I treated myself to a 360° camera (strictly, a 4π steradian camera, as solid angles are not measured in degrees!). These come in very varying quality and price, so I got an entry level model of a good brand (Ricoh theta SC2 - c. £260). Video is not brilliant but stills are very acceptable and enable me to record favourite places in virtual reality.

Stargazers among you might enjoy a photo of the night sky - the whole of it! - taken yesterday, 12th Jan. I've posted two copies on the linked page, one as a crib for those who don't know their stars (everyone should!!). I am the young man gazing at Orion and Minnie's head is on fire because she is wearing her glowy collar (for night-time walks) and I used a full minute's exposure for this picture.

Best viewed on a computer (the full-screen option doesn't work on my iPhone). You can scroll in and out and all around:

https://www.guypadfield.com/nightsky12jan2020.html

I'll do a 360° view from inside my pupa cage in the garden tomorrow. :D

Guy
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Re: Padfield

Post by Wurzel »

Cracking set of images Guy :D I'm slightly worried about that Goat Moth larva though - it does look slightly charred - did it get mistaken for a marshmallow? :wink: :D

Have a goodun and stay safe

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Re: Padfield

Post by MikeOxon »

Your 4π camera provides a really immersive image of the night sky, Guy. I was trying to see if I could spot the Andromeda Galaxy but it seems a bit blurry in that area. Other favourites like Orion and the Pleiades are showing well, though, and Betelgeuse is distinctly red.

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Re: Padfield

Post by Padfield »

Thanks Wurzel. I haven't got much experience of goat moth larvae, so I don't know if he'd been creeping around too close to a barbecue, but he was very definitely alive! I saw him to safety and hope he will fly one day ...

Thanks Mike. In fact, the Andromeda Galaxy is distinctly visible in the picture; I marked it with an arrow in the annotated version, vertically above where it looks as if the houses are on fire. I was surprised to see that Uranus was also visible. You don't get so much resolution for your megapixel with a 4π camera, as the area to be covered is so much greater, but nevertheless 60 seconds with this one brings out more sky objects than 15 seconds (the maximum) with my Canon.

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Re: Padfield

Post by MikeOxon »

Thank you Guy - I only noticed your annotated version after I'd been admiring your photo. I simply meant that Andromeda didn't stand out like the fuzzy blob that usually helps me with identification. Some time ago, I bought a Skywatcher tracking mount and it is great for longer exposures of a few minutes. Example shown (feel free to delete from your PD)
Andromeda 20191230 [1600x1200].jpg
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Re: Padfield

Post by David M »

Padfield wrote: Wed Jan 13, 2021 5:54 pm...Stargazers among you might enjoy a photo of the night sky - the whole of it! - taken yesterday, 12th Jan...
I certainly did enjoy that, Guy. You have invested wisely and have mastered it extremely quickly.

This is one of the best times of year to observe the night sky, with Orion dominating proceedings. I never get tired of it.

Brightest 'star' on the 12th was undoubtedly Minnie's collar. It even put Sirius to shame. :)
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Re: Padfield

Post by Padfield »

That's an outstanding photo of the Andromeda Galaxy, Mike - really brilliant, and certainly not to be deleted! Your tracking mount is perfectly aligned. Marvellous that you even got M110!

Thanks David - glad you enjoyed the picture. I was lucky to get such a clear night in the moonless window. I just wish I'd had this camera before I left Switzerland, so I could revisit some of my favourite mountain spots virtually. There are a few webcams in my local region (like this one, up my local mountain: https://villars.roundshot.com/bretaye/) but they only really cover the popular spots.

Guy
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Re: Padfield

Post by Padfield »

I've had very little time to post here recently, but as I took my first lep piccies of 2021 today I thought I'd stick them up!

If this year is like last year, the white-letter hairstreak eggs will soon be hatching. Last year, I found a hatched egg on 21st Feb and the flowers had burst before that. These two eggs are still intact and the flowers are a little behind 2020, but I'm sure the warm weather will bring changes soon:

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I was very happy I could put my skis on last week! :D For Minnie and me it was a little like getting back to Switzerland.

https://www.youtube.com/watch?v=Ekngvfo ... uyPadfield

https://www.youtube.com/watch?v=uRkDJjt ... uyPadfield

That snowy meadow is where the white-letter hairstreaks are waiting to crack open their shells ...

Guy
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Re: Padfield

Post by David M »

Amazing how things can change in just a week or so, Guy. From ski-ing to sunbathing as it seems you are in that little tranche of the country where the sun will shine and the temperatures will rise for the next few days.

We in the west will have to wait a little longer (although we saw none of the white stuff that the east experienced last weekend so no complaints).

I've a feeling your next 'lep' post will be of adult butterflies. :)
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