North Lincs Astro meeting. Monday 4th April 2016

jupiter

The North Lincolnshire astronomy society met on Monday 4th April for the monthly meeting. Around 22 of the regulars turned up.

The talk was about the latest and upcoming NASA missions, and was kindly given by our resident expert Chris Roche. The missions included many well known names together with some ones that do not seem to make the headlines, but are just as important to scientific research.

As always thank you to the Lincolnshire wildlife for the use of venue and Sarah for her excellent tea,s and refreshments, that include the ever popular Captain Rondos biscuits

Click HERE for more information on the North Lincs astro society

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Helios Rapide 8×25 monocular review 30921

helios_rapide_monocular_northernoptics

I had the pleasure of testing the Helios Rapide 8×25 monocular this week. Aimed at the budget end of the market, but as you will see in this review it is anything but budget quality.

The outer packaging is a colourful and sturdy design, showing a good image of the monocular and the full specs. The case is a standard soft nylon one with a belt loop. Thankfully the cleaning cloth included is of a good standard. Sadly so many cleaning cloths with binoculars are very poor quality and wood do more harm than good.

So taking the monocular out of the box, you are greeted by a very sturdy looking body with thick rubber armour and an attractive design. The eye cup is twist type, and has eye relief long enough for spectacle wearers. At first I found the focus wheel quite stiff, but this loosed up very quickly with use.

Optically the view you get is outstanding for a £14.99 (at time of this review) monocular. The result is excellent colours and contrast with virtually no internal reflection. Also for such a small 25mm objective the field is very flat with excellent edge of field sharpness. This is without doubt the best sub £20 monocular I have tested

Close focus is 1.6m, making it also suitable for close up work such as insects in the garden. The wide 6.7 degree field makes tracking of moving targets a breeze. Just under half a turn of the focus wheel is needed for focus from arounf 5m to infinity.

Summing up I would recommend this for adults and children who are old enough to understand how to focus

To check availability contact Northern Optics HERE

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Celestron Upclose G2 10×25 binoculars review 71232

celestron_upclose_10x25_Northernoptics_71232_1

Had my first chance this week to give the Celestron Upclose G2 10×25 binoculars a field test. The Upclose G2 range replaced the old Upclose range. Claimed improvements were upgrade from fully coated to multi-coated optics and an improved build quality. There is a slight price increase.

Compared to the old packaging, the latest model comes with  more subtle colours , but shows a nice image of the binoculars and all the specs shown

The binoculars come in a standard soft nylon case with the logo showing. First thing you notice with the binoculars is the build quality. Excellent rubber armour which gives you confidence, makes for a solid grip and gives them a big binocular appearance.

First look through them you will notice the short eye relief. So you will need to hold them well up to your eyes. I tested in cloudy conditions, so was pleased to find the colours nice and clear. Maybe not the high contrast of BaK-4 prism binoculars, but the BK7 gave perfectly adequate results for binoculars in this price range.

There were some major plus points though. In the centre of view, there was virtually no CA or Chromatic aberration. There was some false colour on the edges, but well within tolerances. On the subject of the edge of field, there was much less fall of in quality and bending of straight lines than I have seen with many more expensive binoculars. The field was quite flat across the view, which is a major problem with many 20-25mm binoculars.

Eye relief is short, so I would not recommend for spectacle wearers. The rubber armour will give some protection from water penetration in a light short shower, but they are not waterproof. Be aware close focus is around 5m, so may not be suitable for study of insects.

Summing up, I would say these are perfect binoculars if you are looking for a sub £30 compact set for general use

The Celestron Upclose G2 10×25 binoculars can be purchased HERE from Northern Optics

 

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Kingfisher. Ness End farm, Far Ings nature reserve

kingfisher 14.3.16g

Had to wait 40 minutes in the cold and foggy conditions for the resident Kingfisher to arrive at its usual perch at Ness End farm at Far Ings. It was worth the wait, as it gave us a good show for a few minutes, and caught a little fish to add to the spectacle.

Despite the foggy conditions, it was close enough to get a good result. Taken with a Canon EOS1100D _ Tamron 70-300mm lens

It is always tempting to `over edit` the colours with Kingfishers. But I find it best to keep it sensible and show them in their true colours

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Dunnock at the Waters` Edge country park. Barton Upon Humber

dunnock 14.3.16a

I took this lovely photo of a Dunnock at the Waters` Edge country park. Lighting was very tricky as it was heavily backlit, to the point where I needed to use flash. This sadly over compensated , leaving me with a washed out image. Thankfully the image was taken in raw file, so I could edit and bring out the detail, and tone it down.

Dunnocks are often confused with Sparrows, as they look very similar at first glance. This one was taken with a Canon EOS1100D and  Tamron 70-300mm lens at 400 ISO

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Ostara 6.5mm eyepiece review. OS330618

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As the Ostara Plossl 6.5mm eyepiece is classed as a low-mid priced eyepiece, it seemed only fair to test on a Celestron Astromaster 70mm refractor. This gave a magnification of 138x. For a standard 70mm telescope this would be a good test for both telescope and eyepiece.

The Ostara PL 6,5mm was one of the later additions to the HR range. Fully coated optics and a sturdy metal body

Turning to Jupiter, I got very clear views of the 2 main cloud belts. But with a little patience some extra dark areas briefly appeared in the belts. The 4 main Moons were very clear points of light and fitted well in the field of view. The 6.5mm plossl does not come with a rubber eye cup , but without glasses I found this not an issue, and made for a very comfortable viewing experience. I would say the eyepiece is not for spectacle wearers.

But then by far the most rewarding and surprising view was when I turned to the lovely double star Algieba in Leo. I thought this pair of 2.4 and 3.6 magnitude stars with a small separation of 4.6 arc seconds would be a challenge. But was greeted by a beautiful sight with a  clear gap between the two, with a sharp diffraction ring around each star making a stunning sight to see. One more nice surprise was the lack of chromatic aberration.

Summing up this is a great eyepiece for small – medium priced scopes. It may not have the high contrast of the fully multi-coated eyepieces, but is a great way to enjoy high magnification without breaking the bank

The Ostara PL 6.5mm eyepiece can be bought HERE from Northern Optics in Lincolnshire UK

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North Lincs astro meeting . Monday 7th March 2016

orion

The North Lincolnshire astronomy society was greeted by clear skies in the first time in what seemed an eternity. Around 24 turned up which included 2 first timers. Our scheduled speaker Chris was unable to be in attendance, so Steve Berry stepped in to give a talk on how to work out the photographic field of view for a few examples of telescope / camera combinations with computer software. Thank you to Craig for stepping in to rectify some PC gremlins.

As always thank you to Sarah for the refreshments and the Lincolnshire wildlife trust for the use of their premises.

Afterwards we got some delightful views of Jupiter and the Orion Nebula through a Skywatcher ST80 and 12″ flex-tube Dobsonian. Thank you to Paul and James for allowing us to look through their telescopes.

For more information on the North Lincs Astro society, click HERE

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Male Reed Bunting. Waters` Edge country park. 6th February 2016

reed bunting 6.3.16b

While on a walk near the Waters` Edge visitor centre on a chilly February morning I saw this delightful Male Reed Bunting.

As he was heavily back lit, I quickly added one stop to exposure compensation. Canon EOS 1100d + Tamrom 70-300mm lens. f8 at 400ISO

Was very happy with the focus. By using RAW files I was able to bring out detail in the shaded part of the bird. Was quite happy for me to take a number of photos. This was my favourite

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Marsh Harrier. Far Ings nature reserve 6th February 2016

marsh harrier 6.3.16b

On a cool Feb Morning at the main Ness End hide at Far Ings reserve at Barton Upon Humber , we were for some time being teased by a Marsh Harrier on patrol, but on the far side of the pond.

Then luckily it decided to have a change of route and headed straight for us. It was a swift and brief encounter that allowed those of us in the hide to get a few shots . Lighting was not too bad, allowing 3200th second at f5.6 @ 400ISO. Camera used , Caonon EOS 1100d + Tamron 70-300mm lens @ 300mm

Image to the right was one of three that got good results

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Ostara 4mm Plossl eyepiece 1.25″

ostara_4mm_eyepiece_northern_optics

The Ostara 1.25″ 4mm plossl eyepiece nicely bridges the gap between budget kelner , modified achromatic etc eyepieces and higher grade (and cost) multi-coated and fully multi-coated plossls.

The Ostara version has a solid metal black / chrome  finish. Complete with lens caps and threaded to accept standard thread 1.25″ filters. The 4mm focal length will give a high power with most telescopes, so please check the power this eyepiece gives will not push the limits of your telescope beyond its capability.

To work out the magnification you simply divide the focal length of the telescope by 4(mm). So for example a Celestron Astromaster 130 with a focal length of 650mm will achieve 162.5x..This will be on the limit of what you can realistically use with this telescope.

Eye relief is short with this eyepiece, and the aperture is very small. So we do not recommend for use with spectacles on

The Ostara range of telescope eyepieces and accessories are becoming a popular  brand among the astronomy community. The basic plossl range are excellent value for money.

Click HERE to buy from Northern Optics. If you are unsure if a 4mm focal length eyepiece is suitable for your telescope, please contact us for advice

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