{{ 'fb_in_app_browser_popup.desc' | translate }} {{ 'fb_in_app_browser_popup.copy_link' | translate }}

{{ 'in_app_browser_popup.desc' | translate }}

nmnh Fragrance Tag FREE worldwide shipping over $75

Your Shopping Cart is empty.
{{ (item.variation.media ? item.variation.media.alt_translations : item.product.cover_media.alt_translations) | translateModel }} {{ (item.variation.media
                    ? item.variation.media.alt_translations
                    : item.product.cover_media.alt_translations) | translateModel
                }}
{{ 'product.bundled_products.label' | translate }}
{{ 'product.bundle_group_products.label' | translate }}
{{ 'product.buyandget.label' | translate }}
{{ 'product.gift.label' | translate }}
{{ 'product.addon_products.label' | translate }}
{{item.product.title_translations|translateModel}}
{{ field.name_translations | translateModel }}
  • {{ childProduct.title_translations | translateModel }}

    {{ getChildVariationShorthand(childProduct.child_variation) }}

{{ 'product.set.open_variation' | translate }}
  • {{ getSelectedItemDetail(selectedChildProduct, item).childProductName }} x {{ selectedChildProduct.quantity || 1 }}

    {{ getSelectedItemDetail(selectedChildProduct, item).childVariationName }}

{{item.variation.name}}
{{item.quantity}}x NT$0 {{ item.unit_point }} Point
{{addonItem.product.cover_media.alt_translations | translateModel}}
{{ 'product.addon_products.label' | translate }}
{{addonItem.product.title_translations|translateModel}}
{{addonItem.quantity}}x {{ mainConfig.merchantData.base_currency.alternate_symbol + "0" }}
GSO RC20B 20" F/8 M-LRC LW Ritchey-Chrétien Truss Carbon OTA

GSO RC20B 20" F/8 M-LRC LW Ritchey-Chrétien Truss Carbon OTA

Features
Coma free, chromatic aberration-free, spherical aberration-free optics
F/8 focal ratio
Fixed primary
Low thermal expansion quartz mirrors
3" Dual-speed Crayford focuser


NT$800,000
{{shoplineProductReview.avg_score}} {{'product.product_review.stars' | translate}} | {{shoplineProductReview.total}} {{'product.product_review.reviews' | translate}}
{{amazonProductReview.avg_rating}} {{'product.product_review.stars' | translate}} | {{amazonProductReview.total_comment_count}} {{'product.product_review.reviews' | translate}}
Quantity Product set quantity
The maximum quantity per submit is 99999
This quantity is invalid, please enter a valid quantity.
Sold Out

Not enough stock.
Your item was not added to your cart.

Not enough stock.
Please adjust your quantity.

{{'products.quick_cart.out_of_number_hint'| translate}}

{{'product.preorder_limit.hint'| translate}}

Limit {{ product.max_order_quantity }} per order.

Only {{ quantityOfStock }} item(s) left.

Please message the shop owner for order details.
Description
Features
Optical design: Ritchey-Chretien
Optical diameter: 500mm
Focal length: 4000mm
Focal ratio: F/8
Optics type: Hyperbolic mirror
Optics Material: Low thermal expansion quartz mirrors
Highest theoretical magnification: 900x
Focuser: 3" dual-speed Linear Bearing Crayford EAF compatible
Mirror Separation: 1118mm
Back Working Distance: 400mm
Astro-imaging capability: Lunar, planetary & long exposure
Dovetail plate: D type
Tube material: Aluminum & Carbon
Baffle: new Multiple knife-edge baffle system

Package includes
(RC20B) 20" RC OTA only
Three built-in cooling fans, with battery holder
1.25" Eyepieces adapter
2x25mm, 1x 50mm focus extension tube

Shipping & Payment

Delivery Options

  • 順豐到付
  • EMS (Small items ONLY)(7-14days)
  • Worldwide Shipping (Ask shipping cost before purchase)
  • SELLER DELIVERY

Payment Options

  • PayPal
  • Credit Card