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Help for Skywatcher Skyliner 150P reflector f.length 1200mm

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This is Azimul.

I have recently bought Skywatcher Skyliner 150P reflector f.length 1200mm.
With kit:
10mm+25mm Plossl eyepieces,
Seben DKA2 camera mount,
ostara premium moon filter,
ostara quality 3x barlow,
seben laser collimator,
2" adapter.

Now i want to buy a planetary eyepice (or a 2x barlow if needed) for observing planets more clearly and an eyepiece of more than 25mm (as supplied 25mm can't observe the whole i.e.of Orion).What i should i do now?

I've got some reviews about -

01. BST Starguider 5mm (http://www.ebay.co.uk/itm/380679674710)
02. Skywatcher SP series super Plossl 40mm eyepiece (http://www.ebay.co.uk/itm/400561608208)
03. Ostara Quality 2x Barlow (http://www.ukhobbystore.co.uk/eyepieces-/128-quality-2x-barlow-lens-ostara-achromatic-eyepiece.html)

04. Ostara Plossl high quality 40mm eyepiece (http://www.ukhobbystore.co.uk/eyepieces-/163-40mm-plossl-high-quality-ostara-eyepiece-.html)
05. Ostara high quality Plossl 5mm eyepiece (http://www.ukhobbystore.co.uk/plossl-eyepieces/157-5mm-plossl-high-quality-ostara-eyepiece-.html)

Please also consider the price range i acn afford an amount of £90-100 maximum.

Any help will be highly appreciated...thanks in advance

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maybe the 5mm or 7mm for planetary and if you wanted all of orion then maybe use your finder scope? im still a novice myself and am sure others will have better advice..

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I have the f5 150p and have the 5mm BST brilliant eyepiece but dont get much chance use it in Britain i have the 8,15,18 BST starguiders at £49 they are brilliant eyepieces the 8mm is brilliant on planets. I have a 32mm plossl anything over that i.e 40mm will not show you any more FOV in a 1.25 inch. 

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Thanks.Ohmsie.But what will be the spec. means 2.3mm/5mm/7mm? can u pls. specify?

The numbers refer to the focal length of the eyepiece, the smaller the number the greater the magnification. The magnification can be calculated by dividing the focal length of the telescope by the focal length of the eyepiece. ie 1200/5 = 240x magnification

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You can get the same FOV with a 32mm Plossl if your going for a 2inch your looking at 80-100 degree Fov to gain anything for the price.

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