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Members Visit Kelling Heath Star Party

On the 10th September, members Mark Radice and Dave Shave-Wall set off for the remote corner of East Anglia, the most north easterly part of England to attend the Kelling Heath Star Party. The roads to Kelling from the South East of Englands home county of Hampshire never seem to end, but after nearly 6 hours of driving in Friday afternoon traffic we arrive is this very rural part of England.

We set about setting up tent, cooking some food on the stove and watching the light fade, then we venture out to see who and what have arrived to one of the darkest sky sites and largest star parties England offers.

Many people are still setting up, deep sky imaging rigs are being attended to by budding astrophotographers who dart from here to the there, the red light from their head torches betraying their location as the tighten bolts and attach cables whilst waiting for the clouds to clear. Meanwhile deep sky visual observers sit and relax in their large lounge chairs, massive dobsonian beasts lie still facing horizontally on the grass surrounding the tents.

The Kelling Heath site is massive, over the course of the nights Mark and I walk in the region of 8 miles, back and forth from the Blue to the Red fields, stopping every now and then to ask what people are up to and to hopefully be offered a view through their scopes. Most people are pleasant and welcoming, some less inviting people make a few comments about viewing when people have left their little ‘dell’. In the main though the majority of folk are very nice indeed and this is what makes this star party special. The community of strangers with astronomy in common becomes a close community of friends who want to share.

After a whiles Mark and I stop at a pair of massive binoculars, that turn out to be 5″ APMs and we stare through with eager interest of what is on view. The sight that greets your eyes is pronominal. I had forgotten the effect of using both eyes. Despite the stars being appreciably far away that depth is not really seen, you fall into the large binoculars, eyes darting left and right, up and down, soaking in the view that is most definitely 3D in its nature. M81 and M82 that I had previously looked at through my 6″dob now looks like someone is holding the on a piece of fine fishing line, dangled in front of the stars the actually sit behind. This is the moment of conversion for me, an epiphany, a calling, I commit at this moment in time to go back into visual. No I won’t give up astrophotography, of course not. I will move my setup at home to Spain and gain more data, but I will also buy a pair of these wonderful binoculars and use my 6″ dob to view the night sky, connecting in a way which no other astronomy can connect you to the majesty of the universe.

We wonder here and there, look through the mighty 22″ UC Obsession dob owned by the extremely pleasant and knowledgable Owen Brazell and spy the comet of the moment 21p Giacobini-Zinner just above the hedgerow. The tail definitely showing as it points to around 7 o’clock in the field of view. A view through a set of 6″ binos produces a slightly wider view as the comet sets. We went on to have around a few hours of clear skies, I bagged a handful of objects in the 6″ reminding me just how good this little scope it that is owned by my daughters.

The next day brings conversation with many astronomers after a leisurely bacon fried breakfast cooked by my good friend Mark. We head across to the trade stalls and I decide to dive into the purchase of The Night Sky Observers Guide, Mark had shown me the night before. Think of it as the serious astronomers version of Turn Left at Orion with over 5000 objects to hunt down and see. I purchase volumes 1 and 2 along with a years membership of the Webb Society, with it’s quarterly magazine, The Deep-Sky Observer.

After looking through both 5″ and 6″ binoculars I bump into Altair Astro and their own pair of 4″ binos, much more portable for me for Tenerife and superb quality. They are even about to produce and sell their first bino wedge for the binos which is very akin to the APM wedge on show. A must buy before this years November trip to La Palma.

Again we meet with long lost friends such as Keith Venables whom started my observatory building 14 years ago by borrowing his dome mould that build the IMT-1 and IMT-2 at Bob’s house.  After another night with cloud in toe, we wake, have another breakfast and pack up and head home across the South East. I must admit it was a good trip, great conversation with my friend Mark and having learnt a lot from the new astronomers I met a real change to the direction my astronomy will take over the next 14 years. I look forward to returning one day to Kelling Heath.

The processing begins

Now we have returned from the Tenerife trip, sorting through the data accumulated, in my case some 0.72 Terabytes, starts. Most of the data comes in the form of movie files for the Moon and planets through the MONS telescope. The rest is a mixture of deep sky objects and a small portion of night time shots around the observatory. An example is this shot taken from the ridge overlooking the observatory.

So what types of image am I processing right now? Well here is one I processed in the past few weeks whilst I start to work on some shots of Mars. This is an image of NGC 7023, the Iris nebula. What you are looking at is a reflection nebula, containing dust and gas which has it’s electrons excited by the star within. The rest of the image contains a lot of stars and a huge amount of Interstellar Flux Nebula, pervading clouds of dust within this region of space.

So I will go back to processing some more images and see if I can crack through the 10s of images yet to come from our successful week away.

Tenerife9 2018 Session Ends Early – Saharan Dust Stops Play

The group has had to bring the session to an early close due to the Saharan dust levels wiping out the sky quality. Known as the Calima, hot winds from the East bring Saharan dust across to Tenerife which destroys the sky quality needed for deep sky imaging.

We monitored the SONG (Stellar Observations Network Group) weather page throughout the week to assess our chances at clear sky imaging. When the red level is breached then the resident telescopes at Teide close their domes. For our purposes we were looking for dust levels around 0.001 which is below the yellow line.

Reproduced with kind permission of the SONG Telescope (data values by STELLA)

Before the Calima arrived the SQM was measured to be around 21.68 mag/arc sec2 (Bortle class 4) compared to around 20.5 (Bortle class 4/5) in the UK local area. Bob’s image also shows the visible layer of Calima dust :

Calima dust layer blocks the view to Mount Teide

It was a good week for all regardless of the common issues many of us encountered that stopped initial imaging attempts but once into the groove some nice images started to appear both for the portable deep sky imagers and those using the Mons Telescope for spectroscopy and lunar/planetary imaging (Mars/Jupiter/Saturn/Neptune/Uranus).

The founding BASEG members

We would like to extend our gratitude to the IAC for allowing us to the use of the Mons Telescope and the associated facilities ….. gracias amigos 🙂

Packed for Tenerife9 2018 Trip

July  2018 sees another trip to Tenerife with friends from the Basingstoke Astronomy Society Exped Group.  I had such a great time last year I can not wait to return again….Super excited.

From Tenerife, the planets will be high in the sky, the summer milky way will be glorious and there are a reasonable hours of darkness (unlike home where it isn’t getting dark at all!).  Not only is the site perfect for observing (assuming it is dust free) we also get use of a 20” f15 cassegrain and facilities such as a warm room (table, chairs, kettle), outside electricity to power equipment and access to a toilet.  A pleasant change from being in a layby on the hillside.

A solar system full house

I am really excited to be able to observe the planets.  Being located in the far southern sky for some years to come the major planets are out of sight from my observatory, hidden behind nearby trees. The major 3 will be well placed: Jupiter, Saturn and Mars*.  In the evening sky, Venus and Mercury are visible and in the morning sky Uranus and Neptune are returning.

I am wondering if it will be possible to observe all major bodies of the solar system in one go?  The planets are all well placed – plus there is the minor planet Ceres, asteroid Vesta, the crescent Moon, solar observing during the day, zodiacal light, the moons of the outer planets – and in the foreground we have earth’s Mt Teide (the highest mountain in Spain).  Faint Pluto is possible but at mag 14 it will be a challenge.  I have observed it with the 20” dobsonian at Les Grange in France so assuming I can star hop (which is a challenge as the telescope can be rather ungainly) it should be visible.  There are is also a relatively bright (mag 10 or so) Comet 21P Giacobini-Zinner that we can track from night to night.

Equipment

A key question is what equipment to take.  We have access to a telescope which is fantastic for observing the planets but it is always well utilised by the group.  While I would love to fill my boots it wouldn’t be fair to use it exclusively so I am taking my 6” Maksutov and a tracking mount (all second hand) along with my binoculars, camera, eyepieces, sketching equipment etc.  I paid extra for my flight so I can take a hand-carry suitcase.  This means I can take all my delicate optics with my in the cabin while the heavier, more robust tripods, extension cable etc can go in the hold.

This means I can be:

  • Observing inside the dome when it is free
  • Using my 6” telescope in the meantime
  • Chilling out with my binoculars in the summer milky way
  • Taking wide field shots and timelapses

I made a video of the set up I am taking and how it all fits into 2 suitcases below :

A report and video of the amazing sights we saw last year is also below

* Jupiter is just past opposition (it was at opposition on 10 June) with Saturn only a week past opposition and Mars nearly at opposition (it reaches opposition on 27 July just after we return).

Visit to BAA Summer Meeting

Well a few of our members decided to have a day out, to fill the gap in our annual calendar from having a yearly visit to Astrofest, to our trip later this week to the MONS observatory on mount Teide in Tenerife.

So we travelled up to the BAA Sumer Meeting which had a host of great speakers from the professional field. Professors and Dr’s alike came to update us on their field of research based around planetary systems, both here and in the wider cosmos.

A couple of the talks that resonated really well were from Professor Giovanna Tinetti on Exoplanets and the best of the day had to go to Leigh Fletcher specking about the weather on giant gas planets.

 

New kit for upcoming trip to Tenerife

After a couple of trips to Tenerife with my Canon 5D Mkii, Canon f2.8 200mm prime lens on an AstroTrac as my main imaging kit, I’ll be adding a Takahashi FS60-CB with a flattener and an ATIK Infinity Mono camera to the mix.

Recent imaging for the dstl Project Argus has helped resolve adapter issues with the FS60 / Canon DSLR combination as it is a FS60 special and not a regular Wide EOS adapter that is required.  Live broadcasting to YouTube will also be a new possibility this trip with the ATIK Infinity camera.

 

Preparing for my first Tenerife trip

So since I don’t have a mobile setup like the veterans of the group I’m resigned to fact that I need to take most of my UK setup with me abroad. This means some serious weight to transport, so basically I have the following to pack and carry :

  • Hold bag1 (~18Kg)
    • Skywatcher NEQ6 mount
  • Hold bag2 (~18Kg)
    • Skywatcher Tripod (7Kg)
    • Counterweight (5Kg)
    • Box of accessories (~6Kg)
      • PSU, cables etc
    • Clothes …. I guess
  • Cabin bag1 (~7Kg)
    • Tak FSQ85
    • Tak focal reducer
    • Atik 460 CCD imaging camera
    • Lodestar guide camera
    • PoleMaster camera
    • Lakeside focuser control unit
    • Unihedron SQM
    • ADM Scope plate
  • Cabin bag2 (~6Kg)
    • Atik EFW2 and filters
    • Laptop & NUC
    • Various digital items (GPS, USB hard disk etc)
    • ADM mount puck and scope rings

Hopefully the scope bag will in in the overhead with it’s precious contents….don’t drop it ! The laptop bag should fit under the seat….hopefully.

I won’t be sure on the final weights until the digital handheld scales I’ve ordered arrive tomorrow.

At the moment I’m just finishing the calibration and setup of the Lakeside focuser and it’s configuration in SGPro.

Update : The digital scales arrived so now I have weights for a few items and move things around a bit –

  • Hold Bag1 = 19.3kg
  • Hold Bag2 = 22.5Kg
  • Cabin Bag1 = 8kg
  • Cabin Bag2 = 8.85Kg